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Question: How much water is needed to fill a cube-shaped container with one side 7 centimeters (cm) long? Answer: To find the volume of a cube-shaped container, you use the formula for the volume of a cube, which is: Volume = side_length^3 Given that the side length of the cube is 7 cm, the volume would be: Volume =...
Question: Some triangles have all three sides equal in length of 14/8 centimeters (cm). What is the sum of the lengths of the three sides of this triangle in centimeters (cm)? Answer: If all three sides of the triangle are equal in length and each side is 14/8 cm, then the sum of the lengths of the three sides would be...
Question: Eunseol divided 28 candies equally into 4 pockets, and Sujeong split 18 candies equally into 3 pockets. Who among Eunseol and Sujeong has fewer candies in one pocket? Answer: To find out who has fewer candies in one pocket, we need to divide the total number of candies each person has by the number of pockets...
Question: The house has 3 blue cards and 5 yellow cards. What is the total number of cases when you give one of the cards to your cousin? However, all cards are distinguishable. Answer: If all cards are distinguishable, it means each card is unique. Therefore, the total number of cases when giving one card to your cous...
Question: What is the smallest three-digit number that can be formed by using the five different numbers 3, 0, 2, 5, and 7 only once? Answer: To form the smallest three-digit number using the numbers 3, 0, 2, 5, and 7, we need to consider the place values of each digit in the three-digit number. The smallest digit sho...
Question: When the paint was weighed using a scale and a 100 grams (g) eraser of the same weight, it was equal to the weight of 3 erasers, and when the crayons were weighed, it was equal to the weight of 5 erasers. Which is lighter, paint or crayons? Answer: If the paint weighs the same as 3 erasers, and each eraser we...
Question: Jungkook had 6 apples, but he got 3 more. When Yoongi has 4 apples and Yuna has 5 apples, who has the most apples? Answer: Jungkook initially had 6 apples and got 3 more, so he now has 6 + 3 = 9 apples. Yoongi has 4 apples, and Yuna has 5 apples. Comparing the number of apples each person has: - Jungkook ha...
Question: Students lined up in order of seniority. Yuna is younger than Yujeong who is 15th oldest and older than Eunji who is 17th oldest. In what number oldest is Yuna? Answer: Yujeong is the 15th oldest, and Eunji is the 17th oldest. Since Yuna is younger than Yujeong but older than Eunji, Yuna must be the 16th olde...
Question: When Seokjin was doing a division, he misread the tens digit and units digit of the divisor 65 as the opposite to get the quotient of division 25, and the remainder also 25. Find the sum of the correctly calculated quotient and remainder. Answer: Seokjin misread the divisor 65 as 56. Let's denote the dividend...
Question: A is a single digit natural number. Find A from the multiplication formula AA×AA=5929 of two digit numbers where each digit is A. Answer: Let's denote the single digit natural number as A. The multiplication formula given is AA × AA = 5929, where AA represents a two-digit number with both digits being A. To ...
Question: There were 24 cars in the parking lot, and after 8 cars went out, another 6 cars went out. How many cars are left in the parking lot? Answer: There were originally 24 cars in the parking lot. After 8 cars went out, there were: 24 - 8 = 16 cars left. Then, after another 6 cars went out, there were: 16 - 6 =...
Question: There is a wall in the shape of a rectangle with dimensions of 36 centimeters (cm) wide and 72 centimeters (cm) long. On this wall, I want to attach tiles that are 3 centimeters (cm) and 4 centimeters (cm) in width and length, respectively, without empty spaces. How many tiles should I glue in all? Answer: To...
Question: Randomly selected two digit numbers were 31, 49, 62, and 76. What is the difference between the largest and smallest of these numbers? Answer: The largest number among 31, 49, 62, and 76 is 76, and the smallest number is 31. The difference between the largest and smallest number is: 76 - 31 = 45 So, the dif...
Question: Hoseok added 36 to a certain number and got 71. What is the value of adding 10 to this certain number? Answer: Let's call the certain number "x". According to the information given: Hoseok added 36 to x and got 71, so we can write the equation: x + 36 = 71 To find the value of x, we subtract 36 from both s...
Question: What is the tenth largest number among four digits with odd digits? Answer: To find the tenth largest number among four digits with odd digits, we need to consider that odd digits are 1, 3, 5, 7, and 9. The largest four-digit number with odd digits would be 9999. To find the tenth largest, we would decremen...
Question: If there are 6 students A, B, C, D, E, and F, find the number of ways to select 3 representatives. Answer: To find the number of ways to select 3 representatives from 6 students, we can use the combination formula, which is given by: C(n, k) = n! / (k! * (n - k)!) where n is the total number of items, k is ...
Question: What is the largest number less than 0.7 among 0.8, 1/2, 0.9, and 1/3? Answer: To find the largest number less than 0.7 among the given numbers, we need to compare each number to 0.7. The numbers given are: - 0.8 - 1/2 - 0.9 - 1/3 Let's convert the fractions to decimal form to make the comparison easier: - ...
Question: Eight smaller cubes of the same size are stacked to form a larger cube. If the volume of the stacked cubes is 1000 cubic centimeters (cm3), how many centimeters (cm) is the length of one edge of the smaller cube? Answer: If eight smaller cubes are stacked to form a larger cube, then the volume of the larger c...
Question: Given that the sum of the lengths of the edges of one face of a regular tetrahedron is 18 centimeters (cm), how long is the length of one edge of this tetrahedron? Answer: A regular tetrahedron has four faces, each of which is an equilateral triangle. This means that all edges of the tetrahedron are of equal ...
Question: 20 cars are parked in a row. The black car is 16th from the right, and the white car is 11th from the left. How many cars are between the black and white cars? Answer: To find out how many cars are between the black and white cars, we need to determine their positions in the row. The black car is 16th from t...
Question: Jaewoong's house has a rectangular swimming pool with an area of 143.2 square meters (m2). If the length of this pool is 4 meters (m), what is the width in meters (m)? Answer: To find the width of the swimming pool, we can use the formula for the area of a rectangle, which is: Area = Length × Width We are g...
Question: There is a rectangular farm. If the length of the long side is 1 kilometer (km) and the length of the short side is 2/8 km (km) shorter than the length of the long side, what is the total circumference of the farm in kilometers (km)? Answer: To find the circumference of the farm, we need to know the lengths o...
Question: The five digit number 3A3B3 is a multiple of 33. How many possible Bs are there? Answer: To find the possible values of B, we need to ensure that the number 3A3B3 is divisible by 33. A number is divisible by 33 if it is divisible by both 3 and 11, since 33 is the product of these two prime numbers. First, le...
Question: There is an icosikaipentagon. How many diagonals can you draw from one vertex? Answer: An icosikaipentagon is a polygon with 25 sides. To determine the number of diagonals that can be drawn from one vertex, we need to consider that a diagonal is a line segment connecting two non-adjacent vertices. From any g...
Question: ABCD+ABCD=5472. What is the value of D when A, B, C, and D are different numbers? Answer: Let's solve the equation step by step. Given: ABCD + ABCD = 5472 Since both ABCD are the same, we can simplify this as: 2 * ABCD = 5472 Now, divide both sides by 2 to find the value of ABCD: ABCD = 5472 / 2 ABCD = 2...
Question: The distance from the orchard to the house is 800 meters (m), the distance from the house to the pharmacy is 1300 meters (m), and the distance from the pharmacy to the school is 1700 meters (m). How many meters (m) is the distance from the orchard through the house to the pharmacy greater than the distance fr...
Question: Find the product of the number of faces and the number of vertices of a cube. Answer: A cube has 6 faces and 8 vertices. The product of the number of faces and the number of vertices of a cube is: 6 (faces) * 8 (vertices) = 48 So, the product is 48.
Question: Taehyung's average score for Korean, English, and science is 95. When Taehyung says his average score dropped by 3 points after taking the math test, what is his math score? Answer: To find Taehyung's math score, we first need to calculate his total score for Korean, English, and science before the math test....
Question: How many diagonals can you draw in a hexagon? Answer: A hexagon has six sides. To find the number of diagonals in a polygon, you can use the formula: Number of diagonals = n(n - 3) / 2 where n is the number of sides in the polygon. For a hexagon, n = 6. So, the number of diagonals is: Number of diagonals ...
Question: The volume of a cuboid is 315 square centimeters (cm2). If the width is 9 centimeters (cm) and the length is 7 centimeters (cm), what is the height in centimeters (cm)? Answer: The volume of a cuboid (also known as a rectangular prism) is calculated by multiplying its length, width, and height together. The f...
Question: When we divide 37 by 8, the remainder is B and the quotient is A. Find the right value for A. Answer: When we divide 37 by 8, we can calculate the quotient (A) and the remainder (B) as follows: 37 ÷ 8 = 4 with a remainder of 5. So, the quotient (A) is 4.
Question: On the train, Yoojeong moved 3 stops and Namjoon moved 2 stops. How many stops did Yoojung and Namjoon travel by train? Answer: Yoojeong moved 3 stops and Namjoon moved 2 stops. To find the total number of stops they traveled by train, you add the number of stops each person traveled: Yoojeong's stops: 3 Nam...
Question: Yoongi tries to find the difference between a two-digit number and 53. Yoongi misunderstood the tens and ones digits of 53 and thought it was 35. The difference Yoongi calculated incorrectly is 27. Find the correct result. Answer: Yoongi thought the number was 35 instead of 53. He calculated the difference be...
Question: There were 25 boxes of apples and 12 boxes of pears in the mart. If you buy 8 more boxes of apples and 8 more boxes of pears, how many more boxes of apples there are than boxes of pears? Answer: Before buying more boxes, there were 25 boxes of apples and 12 boxes of pears. After buying 8 more boxes of each, ...
Question: There are 5 boxes of apples of the same weight in the supermarket. After removing 30 kilograms (kg) of apples from each box, the weight of the remaining apples in the five boxes was equal to the weight of the apples in the original two boxes. How many kilograms (kg) of apples were originally in each box? Answ...
Question: How many natural numbers are there not more than 30 are odd or multiples of 5? Answer: To find the number of natural numbers not more than 30 that are odd or multiples of 5, we need to count each set separately and then apply the principle of inclusion-exclusion to avoid double-counting the numbers that are b...
Question: Seulgi is Hyunjung's grandmother. Miran is the daughter of Hohyun and the first daughter to marry Jaeyoung whose younger than her. Among Hohyun's children, Hyunjung is the eldest daughter. Who is the 3rd oldest among 5 people? Answer: To determine the 3rd oldest among the 5 people, we need to establish the or...
Question: I decided to share 1 liter (L) of milk with my friends. Of these, Myeongseok drank 0.1 liters (L), and Mingu drank 0.2 liters (L) more than Myeongseok. After a while, if Min-jae came and drank 0.3 liters (L) of milk, how many liters (L) of milk could I drink? Answer: Let's calculate the total amount of milk c...
Question: Hyungjin and Kyujun have been making a cube statue. The length of one side of the statue of Hyungjin is 100 centimeters (cm), and the length of one side of the statue of Gyujun is 2 meters (m). How many times the volume of the statue is different between the two? Answer: First, let's convert the measurements ...
Question: The number of (a) trees is twice the number of (b) trees, and there are 15 more (c) trees than (a) trees. If there are 47 (c) trees, how many (a), (b), (c) trees are there in total? Answer: Let's denote the number of (a) trees as A, the number of (b) trees as B, and the number of (c) trees as C. According to...
Question: There are 2 sticks of different lengths. The length of the long stick is 18 centimeters (cm) longer than the length of the short stick, and the sum of the lengths of the two sticks is 30 centimeters (cm). Find how many sticks with the same length as the shorter sticks can be made by cutting the longer sticks....
Question: We have a machine that produces 370 pencils a day. How many days will it take to produce 1000 dozen pencils on this machine? Answer: First, let's determine how many pencils are in a dozen. A dozen is 12, so 1000 dozen pencils would be: 1000 dozen * 12 pencils/dozen = 12000 pencils Now, we know that the mach...
Question: Bacteria split into two in one minute. If after 1 minute it becomes 2, and after 2 minutes it becomes 4, and so on, how many will there be after 8 minutes? Answer: The number of bacteria doubles every minute. This is an example of exponential growth, where the quantity increases by a constant factor at consta...
Question: You are trying to solve all the problems in the workbook in 4 days. You solved 1/2 of the problems were solved on the first day, 1/4 of the problems on the second day, 1/6 of the problems on the third day, and 20 problems left on the fourth day. How many problems are there in the workbook? Answer: Let's denot...
Question: Mina drank 0.3 liters (l) of Coke twice. Seokhyung drank 3/2 liter (l). If Songhwa drank 0.6 liters (l) less than Seokhyung, who drank the most cola? Answer: First, let's calculate the total amount of Coke that Mina drank. Since she drank 0.3 liters twice, we can multiply 0.3 liters by 2: Mina's total = 0.3 ...
Question: Three classes A, B, and C participated in the reading competition. If the students in class A read more than the students in class B, and the students in class C read more than the students in class A, find which class read the fewest books. Answer: Based on the information provided: 1. Class A read more tha...
Question: Hohyun is 162 centimeters (cm) tall and Seulgi is 159 centimeters (cm) tall. Who is taller? Answer: Hohyun is taller than Seulgi. Hohyun is 162 cm tall, while Seulgi is 159 cm tall.
Question: Jiyeon wants to make the biggest number by using the number cards in front of her once. Given the number cards 1, 4, and 5, what natural number should she create? Answer: To create the biggest number possible with the number cards 1, 4, and 5, Jiyeon should arrange them in descending order. Therefore, the lar...
Question: I'm trying to put 22 people in order of height. When everyone's height is different, (a) is 13th from the back. If you start with the shortest person, what number does (a) stand in? Answer: If (a) is 13th from the back in a line of 22 people, we can determine (a)'s position from the front by subtracting 13 fr...
Question: You are going to subtract the diameter of the smallest circle from the diameter of the largest circle among three circles (a), (b), and (c) with areas of 48 square centimeters (cm2), 108 square centimeters (cm2), and 75 square centimeters (cm2), respectively. Find the value in centimeter (cm) if pi is 3. Ans...
Question: How many circles with a radius of 4 centimeters (cm) can be drawn on a line segment of 24 centimeters (cm) without overlapping? Answer: To determine how many circles with a radius of 4 cm can be drawn on a line segment of 24 cm without overlapping, we need to consider the diameter of each circle. The diameter...
Question: There is a parallelogram with an area of 44 square centimeters (cm2) and a height of 11 centimeters (cm). What is the length of the base of this parallelogram in centimeters (cm)? Answer: The area of a parallelogram can be calculated using the formula: Area = Base × Height We are given the area (44 cm²) and...
Question: The length of the wooden block of Yoojung is 30 centimeters (cm) shorter from 31 meters (m). Write the length of the wooden block that she has in centimeters (cm). Answer: First, we need to convert the 31 meters to centimeters because the length we want to find is in centimeters. 1 meter is equal to 100 cen...
Question: There are two goblins, Pongpong and Longlong. Pongpong adds 300 each day to 8000, and Longlong adds 500 each day to 5000. It is said that the treasure will be given on the same day as the number of Pongpong and Longlong. How many days can they get the treasure? Answer: To find out when Pongpong and Longlong w...
Question: The fishmonger sold half of the fish he had for lunch and 1/3 of the rest for dinner, leaving 12 fish. How many fish did they originally have in the shop? Answer: Let's denote the original number of fish as F. According to the problem, the fishmonger sold half of the fish for lunch, so he was left with F/2 f...
Question: What is the second largest number among 5, 8, 4, 3, and 7? Answer: The second largest number among 5, 8, 4, 3, and 7 is 7.
Question: Of the 13 animals, 6 are black and all others are white. How many white animals are there? Answer: If there are 13 animals in total and 6 of them are black, then the number of white animals would be the total number of animals minus the number of black animals. Number of white animals = Total number of anima...
Question: The playground of Dongmin's School is 1105 square meters (m2) and has 650 students. The playground at Yonghee's school is 1440 square meters (m2) and has 960 students. Whose school has the largest playground area per student? Answer: To find out which school has the largest playground area per student, we nee...
Question: There are cards in the shape of a rectangle. If the sum of the lengths of the four sides of this card is 46 centimeters (cm) and the length of the width is 7 centimeters (cm) longer than the length of the length, find the length in centimeters (cm) of the width of this card. Answer: Let's denote the length of...
Question: Seokgi and Jihae shared 2 liters (L) and 100 milliliters (㎖) of milk. How many milliliters (ml) of milk must Seokgi drink if he is to drink 200 milliliters (ml) more than Jihae? Answer: First, let's convert the total amount of milk from liters and milliliters to milliliters. Since 1 liter is equal to 1000 mil...
Question: There are three number cards 1, 7 and 3. When two of these are used to form the largest two-digit number, find the unused number. Answer: To form the largest two-digit number using two of the three cards (1, 7, and 3), we should place the largest digit in the tens place and the second largest digit in the one...
Question: Each bag of jellies contains 3 strawberry-flavored jellies and 4 grape-flavored jellies. If you get 25 bags of new jellies today and the total number of strawberry-flavored jellies is 150, how many grape-flavored jellies will there be? Answer: If there are 150 strawberry-flavored jellies and each bag contains...
Question: Donghyeon's class teacher gives away compliment stickers to classmates whenever they do a good deed. If 10 students each received 5, 6, 5, 5, 6, 4, 5, 5, 6, 7 compliment stickers, how many students received 5 compliment stickers? Answer: To find out how many students received 5 compliment stickers, we need to...
Question: A club has 52 members. If 37 of them are men, how many of them are women? Answer: If there are 52 members in total and 37 of them are men, then the number of women can be found by subtracting the number of men from the total number of members: Number of women = Total number of members - Number of men Number ...
Question: 9 is a number that 2 subtracted from the number and added with 4. Find what the number is. Answer: Let's call the number we are looking for "x". According to the statement, if we subtract 2 from x and then add 4, we get 9. We can write this as an equation: x - 2 + 4 = 9 Now, let's solve for x: x + 2 = 9 x...
Question: Make a three-digit number by drawing the number cards from 0 to 9 once. Then, find the sum of the 2nd largest and the 2nd smallest of these numbers. Answer: To create the three-digit numbers, we will use the digits from 0 to 9. The smallest number we can make is 102 (using 1 as the smallest non-zero digit for...
Question: Factory A made 40,680 toys with 60 machines, and Factory B made 37,510 toys with 55 machines. Which factory made more toys per machine on average? Answer: To find out which factory made more toys per machine on average, we need to calculate the average number of toys produced by each machine in both factories...
Question: Find the sum of the smallest and largest numbers that are made up of 1, 2, and 5 and are greater than 100 and less than 1000. Answer: To find the smallest and largest numbers made up of the digits 1, 2, and 5 that are greater than 100 and less than 1000, we need to consider the place values of the digits in a...
Question: There is a rhombus-shaped key holder. If the length of one diagonal of the key holder is 7.4 centimeters (cm) and the area is 21.46 square centimeters (cm2), how long is the other diagonal in centimeters (cm?) Answer: The area of a rhombus can be calculated using the formula: Area = (d1 * d2) / 2 where d1 a...
Question: I multiplied a particular number by 4 and then multiplied again by 25 and I got 812. Find that particular number. Answer: Let's call the particular number you're looking for "x". According to your statement, you first multiplied x by 4 and then multiplied the result by 25. The final result you got was 812. ...
Question: Find the smallest natural number B such that 360÷(A×A×A/B)=5 Answer: Let's denote the smallest natural number B as b. We are given the equation: 360 ÷ (A×A×A/b) = 5 First, let's simplify the equation by multiplying both sides by (A×A×A/b): 360 = 5 × (A×A×A/b) Now, let's solve for b: b = (A×A×A × 5) / 360...
Question: If the gap between a certain number and 5.46 is 3.97 and the number is less than 5.46, find the sum of the number and 5.46. Answer: If the number is less than 5.46 and the gap between the number and 5.46 is 3.97, then the number is 5.46 - 3.97. Subtracting, we get: 5.46 - 3.97 = 1.49 So the number is 1.49. ...
Question: The older brother and younger brother are going to share 25 stamps. If the older brother has 1 more stamp than twice the number of stamps the younger brother has, find how many stamps the older brother has. Answer: Let's denote the number of stamps the younger brother has as \( y \). According to the problem,...
Question: When there is an equation, A72-23=549, find the number A. Answer: To find the value of A in the equation A72 - 23 = 549, we need to isolate A on one side of the equation. Let's solve for A step by step: First, add 23 to both sides of the equation to move the constant term to the right side: A72 - 23 + 23 = 5...
Question: What is the average of the natural numbers greater than 12 and less than 53? Answer: To find the average of the natural numbers greater than 12 and less than 53, we first need to identify the set of numbers we're dealing with. The smallest natural number greater than 12 is 13, and the largest natural number l...
Question: Find the area of a rectangle whose width is 25 centimeters (cm) and its length is 20 centimeters (cm). Answer: To find the area of a rectangle, you multiply the length by the width. Area = Length × Width Given that the length is 20 cm and the width is 25 cm, the area can be calculated as follows: Area = 20...
Question: Hyorim's 6th graders decided to go on a field trip ahead of graduation. If 252 students and 8 teachers go together, the cost of renting a 41-seater bus is 300,000 won and the highway toll per bus is 7,500. How much does it cost to rent the bus and pay the toll? Answer: First, we need to determine how many bus...
Question: There is a box with a base in the shape of an equilateral triangular prism with a side of 13/12 meters (m). What are the minimum meters (m) of ribbon required to wrap the ribbon around the perimeter of this box? Answer: To find the minimum meters of ribbon required to wrap around the perimeter of the box, we ...
Question: There are three numbers 0.8, 1/2, and 9. Which of the numbers greater than or equal to 2? Answer: Among the three numbers 0.8, 1/2 (which is 0.5), and 9, the number that is greater than or equal to 2 is 9.
Question: I have a three-digit A27. When I round down this number from the hundreds place, I get 200. Find A. Answer: If you round down the number A27 from the hundreds place to get 200, it means that A must be a number between 2 and 2.99 (since rounding down from 3 would give you 300). Since A is a digit in a three-di...
Question: Jungkook is taller than Yoongi. Namjoon is taller than Jungkook and shorter than Yuna. Which of the 4 people is the shortest? Answer: Yoongi is the shortest among the four people mentioned. The height order given is: 1. Yuna (tallest) 2. Namjoon 3. Jungkook 4. Yoongi (shortest)
Question: When students standing in a line, Yoojung was at the very back. And there are 8 students standing between Eunjeong and Yoojung. If Eunjeong was at 5th place from the front, how many students were there? Answer: If Eunjeong was at the 5th place from the front, that means there are 4 students in front of Eunjeo...
Question: Subtracting 7 from a number gives 9. What is the product of multiplying a number by 5? Answer: Let's call the number we're looking for "x". According to the information given: x - 7 = 9 To find the value of x, we add 7 to both sides of the equation: x - 7 + 7 = 9 + 7 x = 16 Now that we know x is 16, we ca...
Question: Find the smallest divisor of 28. Answer: The smallest divisor of any number is always 1.
Question: Yoongi subtracted 7 from a certain number and got 9. What is this number multiplied by 3? Answer: Let's call the certain number "x". According to the information given: x - 7 = 9 To find the value of x, we add 7 to both sides of the equation: x - 7 + 7 = 9 + 7 x = 16 Now, we need to find what this number ...
Question: How many three-digit numbers are divisible by the three numbers 2, 3, and 9? Answer: To find the three-digit numbers divisible by 2, 3, and 9, we need to find the least common multiple (LCM) of these numbers. Since 9 is a multiple of 3, we can ignore 3 and just find the LCM of 2 and 9. The LCM of 2 and 9 is ...
Question: Jiwoo drank 1100 milliliters (ml) of milk, 3 liters (l) and 400 milliliters (ml) of juice. When Jungkook drank 4 liters (l) and 800 milliliters (ml) of water, who drank more? Answer: First, let's convert all the measurements to the same unit so we can compare them easily. We'll convert liters to milliliters, ...
Question: What do you get if you add all the numbers of sides of a rectangle, triangle, and a circle? Answer: A rectangle has 4 sides, a triangle has 3 sides, and a circle, by definition, has 0 sides because it is a curve with no edges. So, if you add all the numbers of sides together: Rectangle (4 sides) + Triangle ...
Question: Subtracting 46 from a number resulted in 15. Find how much it would be when 29 is subtracted from this number. Answer: Let's call the unknown number "x". According to the information given: x - 46 = 15 To find the value of x, we add 46 to both sides of the equation: x - 46 + 46 = 15 + 46 x = 61 Now, we wa...
Question: There are four numbers 10, 11, 12, and 13. What is the sum of the smallest number and the next smallest number? Answer: The smallest number is 10 and the next smallest number is 11. The sum of these two numbers is: 10 + 11 = 21.
Question: A is 634. A is 593 greater than C. C is 482 less than B. Get B. Answer: Let's solve this step by step. First, we know that A is 593 greater than C. So we can write this as: A = C + 593 We are given that A is 634, so we can substitute A with 634 in the equation: 634 = C + 593 Now, we can solve for C by subt...
Question: I handed out erasers to both classes. In Dohun’s class, 15 people share 45 erasers, and in Kihun’s class, 5 people share 30 erasers. In which class will one student have more eraser? Answer: To find out in which class one student will have more erasers, we need to calculate the number of erasers per student i...
Question: 51 is the result of mistakenly subtracting 6 from a number instead of multipling by 6. How much is it if you calculate it correctly? Answer: Let's call the original number "x". If you mistakenly subtract 6 from x instead of multiplying by 6, you get 51. So the equation for the mistake is: x - 6 = 51 To find...
Question: How many four-digit numbers formed by using 1, 3, 7, and 9 once have a 7 in the ones place? Answer: To form a four-digit number with 7 in the ones place, we have to fix the digit 7 in the ones place. This leaves us with three other places to fill (thousands, hundreds, and tens) with the digits 1, 3, and 9, ea...
Question: Find the largest quotient of (three-digit number) ÷ (two-digit number) using the number cards 4, 2, 8, 1, 9 only once. Answer: To find the largest quotient, we want to divide the largest possible three-digit number by the smallest possible two-digit number using the given digits 4, 2, 8, 1, 9. The largest th...
Question: 19 toys are placed in a row. If Toy (A) is 8th from the right, where is toy (A) placed from the left? Answer: If Toy (A) is 8th from the right in a row of 19 toys, we can calculate its position from the left by subtracting its position from the right from the total number of toys and adding 1. Position from ...
Question: A bundle of colored paper includes 10 sheets. When Jungkook has 3 bundles and 8 more individual sheets, how many sheets of colored paper does Jungkook have? Answer: Jungkook has 3 bundles of colored paper, with each bundle containing 10 sheets. So, the total number of sheets from the bundles is: 3 bundles * ...
Question: After arranging several cans of soda in a square shape, there were 6 cans left. So, I tried to increase the width and length by one row, but 11 cans were inadequate. If you arrange these cans in 7 rows, how many cans are there in one row? Answer: Let's denote the number of cans in one row of the original squa...
Question: If A-10=15, what number should go in A? Answer: To find the value of A, you need to add 10 to both sides of the equation to isolate A: A - 10 + 10 = 15 + 10 This simplifies to: A = 25 So the number that should go in A is 25.
Question: Yuna, Eunji, Minyoung, and Yoojeong are having a flying contest. Minyoung flew farther than Eunji, and Eunji flew farther than Yoojeong, and Yuna flew farther than Yoojeong. When Minyoung flew farther than Yoojeong, who came last in the competition? Answer: Based on the information provided: - Minyoung flew ...