Maths practice for 12-year-olds - page 4 of 297
Number of problems found: 5924
- A surveyor
A surveyor estimated the distance across a river to be 300 m. The actual distance across the river was 286.4 m. Find the absolute error and the percent error of the surveyor's estimate. If necessary, round to the nearest tenth. - Gallons of gas
Sara drives 171 miles on 7.6 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Using this result, how many miles can Sara drive on 12.5 gallons of gas? - The recipe 3
The recipe for cookies with cream requires 1 2/6 cups of cream for 1 tub. How many cups of cream will you need for 4 tubs? - Joel is
Joel is 2 1/2 inches shorter than Carlos. Carlos is 1 1/4 inches taller than Dan. If Dan is 58 1/4 inches tall, how many inches tall is Joel?
- The population 2
If 3/5 of a village's population is 366 persons, what is the village's population? - White paint
A painter needs 4 1/2 gallons of white paint. He has 1 1/4 gallons of white paint in his truck and another 3/6 gallons of white paint in a storage room. How many more gallons of white paint does the painter need? - The ratio 19
The ratio of males to females in a school is 1:2. If there are 24 pupils, find the number of males. - Multiply 17
Multiply each of the following fractions. Show your work and write your answer as a fraction in simplest form and as a mixed number. You may or may not use the mixed number boxes. Multiply the Fractions ; Result of Multiplying ; Simplest Form ; Mixed Numb - Maria 6
Maria drank 3 liters of water last week. Her friend drank twice as much water as Maria. How many milliliters of water did they both drink?
- Ross is
Ross is using his understanding of place value to divide the decimal 72.56 by the decimal 0.2 Which of the division problems shown could he solve to give him the same answer? A. 7,256 divided by 0.2. B. 725.6 divided by 2. C. 72.56 divided by 2. D. 7,256 - Martha 4
Martha is making cookies for a birthday party. Her cookie recipe calls for 1/2 cup of sugar for one batch of cookies. If Martha wants to triple her recipe, how much sugar will she need? - Ketchup vs mustard
A 20-ounce bottle of ketchup costs $2.80. A 14-ounce bottle of mustard costs 2.38. Which item costs less per pound? How much less? - An electrician 6
An electrician can wire 4 1/2 rooms in 3 hours. How long does it take him to wire each room? - How many 34
How many groups of 34 are in 114? Write your answer as a mixed number in simplest form.
- A concert venue
The floor of a concert venue is 100 3/4 feet by 75 1/2 feet. What is the area of the floor? - Chicken supermarket
Nela bought 5 3/4 kilos of chicken and gave 2 1/2 to her friend. How many chicken was left? - Saw a board
A board of 16 3-fourths inches is cut from a board that is 3 feet long. If the width of the saw cut is one-eighth inch, what is the length of the remaining piece? - Veronica
Veronica walks dogs in her neighborhood for extra money during the summer. For each dog walk, she earns $5.25. On Monday, she completed 3 walks, and on Tuesday, she completed 2 walks. She estimates that to save up for a new purse that costs $86, she must - Anthony 2
Anthony wants to run 1½km. He has already run 9 over 10. How much further must he go?
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