Math practice for 13 year olds - page 101 of 435
Number of problems found: 8682
- A hairstylist
A hairstylist schedules 1/4 hour to trim a customer's hair and 1/6 hour to style the customer's hair. The hairstylist plans to work 2 1/3 hours daily for five days weekly. How many appointments can the hairstylist schedule weekly if each customer must be - A sphere
A sphere has a radius of 5.5 cm. Determine its volume and surface area. A frustum of the sphere is formed by two parallel planes. One through the diameter of the curved surface of the frustum is to be of the surface area of the sphere. Find the height and - The number 6
The number of pizza slices Gilbert ate is four more than three times the amount of candy bars he ate. He ate ten slices of pizza. How many candy bars did he eat? - The sum 22
The sum of three consecutive whole numbers is 27. Find the numbers by showing all the steps. - Jabu had
Jabu had a few marbles. Today, he played and doubled his number. Then Thabo gave him three marbles for free. Jabu now has 21 marbles. How many did he have before he started playing? Solve this problem using a suitable model. - Tomorrow
Tomorrow is athletics day at school. Mom makes double the number of sandwiches that she usually makes. Then she adds four sandwiches so that Jabu and Thabo can each get six sandwiches. How many does she usually make? - Difference 73754
The difference between two positive integers is 25. One number is 59. What is the other number?
- 3S pyramid
A vertical regular 3-sided pyramid is given. The side of the base a = 5 cm, and the height is 8 cm. Calculate the volume and area. - Isosceles right triangle
If the square of the hypotenuse of an isosceles right triangle is 128 cm2, find the length of each side. - Probability 73654
We roll two dice. One is 6-walled, and the other is 8-walled. What is the probability that at least one unit will fall? - Work space
Every person in a conference room must have at least 36 square feet of workspace. A conference room is 28 by 20 ft. find the maximum number of people the room can accommodate. - Angela 2
Angela received 50 rupees as pocket money and spent 2/5 of her money. How much money does she have left? - Selling eggs
Mandy bought 24 trays of eggs. The tray contains 30 pieces. Each tray costs P130.00. He sold per piece for P8.00. But since 12 pieces are tiny, he decided to sell them for P7.00 only. Assume that Mandy incurred the operating expenses of P800.00 and an int - Square-shaped 73564
The map shows a square-shaped field with a side length of 0.7 cm. Its area is 49 ha. Find the scale of the map. - Rectangular 73554
The family house has a rectangular shape with sides of 15m and 12m. Determine the lengths of the sides of a family house on a drawing with a scale of 1:250
- Johnny 2 Johnny spends 1/2 of his salary on his family, 1/6 on personal expenses, and 1/9 on convenience, and he saves the rest. What fraction of his salary does he have? How much money does he save from his salary of $180?
- Sophomores
There are 3200 students at Lake High School, and 3/8 of these are sophomores. If 3/5 of the sophomores favor the school forming a crew team and 7/10 of the remaining students (not sophomores) are in favor of forming a crew team, how many students are oppo - Ben gave Ben gave BTC 900 to his three children. Everyone received the money in proportion to their age. If their ages are 2yrs, 3yrs, and 4yrs, how much did each get?
- The level 2
The liquid level in a thermometer is 32 ˚C lower than the boiling point of water. What is the thermometer reading? A. 36˚C B. 48˚C C. 52˚C D. 68˚C - Expensive 73424
The jacket cost 250 euros and became more expensive by 20% by 250 euros. What is the price after the price increase?
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