Math practice for 13 year olds - page 6 of 362
Number of problems found: 7234
- Jeremy 2
Jeremy is digitally editing out some red-eye problems in the photos from his sister's birthday party. The eyes are small and hard to click on, so he zooms in on the photo from 100% to 400%. In the zoomed-in photo, the eyes are 3 cm wide. How many cm wide - An iron rod
If 22.5 meters of a uniform iron rod weighs 85.5 kg, what will the length of 22.8 kilograms of the same rod? - Single discount 3
What will be the single equivalent discount for successive discounts of 10%, 20%, and 15% on marked price? - Move the average
If the average of 5 numbers is 20, the number which should be added to first number to make the average becomes 30?
- Deli meat
Mrs. Matthews buys deli meat for her kids' lunches every week. This week she buys 3.75 pounds of ham. How many sandwiches can she make if she uses 0.25 pounds of ham for each sandwich? - Four fractions
There are four fractions: 5/8, 7/12, 1/3, and 2/5. Find the difference between the largest and the smallest fraction. - One half of students
There are 1200 students in the school. Of which 600 are girls. Find the percentage of boys. - Test and exam
1100 boys and 700 girls appeared in a test. If 42% of boys and 36% of girls passed, then find the percentage of students who failed. - A baker 6
A baker prepares a cake mix that weighs 120 pounds. The cake mix consists of 25 1/2 pounds of flour, 32 3/4 pounds of sugar, 20 3/8 pounds of milk, 15 pounds of whole eggs, and a total of 7 1/4 pounds of miscellaneous ingredients. The only other ingredien
- A box of paisa
A box cointains 261 coins valued 20 paisa, 25 paisa and 50 paisa. Their values in ruppies are in the ratio of 7:8:10. Find the number of 25 paisa coins. One Rupee 100 Paise or we can also write it like 100 Paise 1 Rupee. - South and then east
William walks 16 m south from his house and turns east to walk 63 m to reach his friend's house. While returning, he walks diagonally from his friend's house to reach back to his house. What distance did he walk while returning? - A circular track
The inner circumference of a circular track is 220 m, and the width of the track is 7 m. Calculate the cost of putting up a fence along the outer circle at the rate of 50 USD/m. - Temperature bellow zero
At 3 PM, the temperature was 12 F. It then began dropping 2 F every hour for 7 hours. What was the temperature after 7 hours? - Average age 4
The average age of 31 people in a group is 19. If one person is reduced to 18, the average age becomes 18. Find the age of the reducing person.
- One-third 18
One-third of a certain journey was covered at the speed of 20 km/h, one-fourth at 30 km/h, and the rest at the speed of 50 km/h. Find the average speed of the whole journey. - Play with mean
The sum of few numbers is 450 and their mean is 50 and if another number 100 is included, the mean would be? - Interior angles 4
How many degrees are in the sum of the interior angles of a quadrilateral? - Big cities
City A has a population of 136000 which is decreasing at the rate of 2400/yr. City B has a population of 84000 which is increasing at the rate of 1600/yr.In how years will the population of two cities become equal? - Milk bottles
A container of milk was 4/5 full. When 12 bottles of milk were taken out and 8 bottles of milk poured into it, it was 3/4 full.How many bottles of milk can the container contain?
A full-tank of petrol a car lasts for 10 days. If driver starts using 25% more everyday, how many days will the full-tank petrol last?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
