Maths practice for 12-year-olds - page 16 of 305
Number of problems found: 6093
- Common denominators
Find the common denominator 5/6 and 1/3
- The length 19
The length and width of a rectangle are 1/6 inches and 3/8 inches. What is the perimeter (in inches) of the rectangle?
- Improper to mixed number
Convert improper fraction 34/7 to a mixed fraction.
- A piece 13
A piece of plank 2 1/2 cm thick is glued to another piece, which is 1 3/4 cm thick, to form a tabletop. Find the thickness of the tabletop if the glue used is 1/5 cm thick. primary school
- Mathematical sentence
Create a mathematical sentence and give the answer. Thrice the product of 3/6 and 2 4/7 gives a result of ___________
- Complete 16
Complete the conversions below, show calculations and answers 1) 3.5 kg to gram 2) 4567ml to litres 3) R45.78 to cent 4) 5.60m to centimeters
- They brought
They brought 180 kg of grapes to the market. They sold 72 kg of them. What part of the grapes did they sell?
- Planetary system
Robert has built a mechanical model solar system with three balls representing planets at the end of rods. Each rod is attached to the center, representing the Sun. The planets are lined up when he turns on the motor. The innermost planet makes a revoluti
- Cocoa
3/4 cup of cocoa is needed to make a chocolate bar. If Rohan wants to make 16 chocolate bars, how many cups of cocoa are required?
- In Paris
In Paris, TX, there are approximately 25,000 people. Of those people, 1/4 are under the age of 18. How many people are under the age of 18?
- Cody states
Cody states that 1/4 + ( - 6/8 ) = 1 whole, while Eddie says that it is - 1/2. Who is correct? Justify your answer and explain your thinking.
- Subtract 20
Subtract and add the following mixed numbers as given: A=2 1/6 - 1 1/2 + 4 2/3. B=4 1/4 - 1 1/3 + 1 1/12. C= 2 1/4 -1 1/5 + 3 3/20.
- Sona takes
Sona takes 4/5 of a mile every day. What part of her walk has she completed after walking 3/5 miles?
- Liquid density
What is the volume if the measure is 20 kg and the density is 2 kg/m³?
- Plus minus mixed numbers
If possible, perform the indicated operation/s and reduce your answer to the lowest term. 1. 3 1/8 + 3/5= 2. 6 3/7 + 4/9= 3. 9 6/13 + 1 3/7= 4. 10 4/5 - 2/3= 5. 13 6/7 - 3/11=
- Rachel 3
Rachel has 1 cup of cinnamon. She makes cinnamon rolls from a recipe that calls for 1/8 of a cup of cinnamon per batch. If she makes 3 batches, how much cinnamon will she have left?
- You have 4
You have eaten ⅔ of a pizza. Your friend eats what is left. How much of the original pizza is left?
- Tom can
Tom can run 3/4 of a mile in 1/8 of an hour. What is the unit rate in miles per hour?
- How many 33
How many 2/3 are there in 4/5?
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