Maths practice for 12-year-olds - page 23 of 301
Number of problems found: 6005
- I added
I added 10 to 3 times a number; the result is equal to 4 times the number. What is the number? - Negative mixed 2
What is −4 2/3 + 2 1/2? Write the answer as a mixed number in simplest form. - Konrad
Konrad coaches football. He cycles 3 km to the stadium at an average 12 km/h speed. How long does Konrad take to cycle to the stadium? - Chemical experiment
For an experiment, a chemical solution starts at a temperature of 25°C, falls to −3°C, rises to 15°C and then falls again to −8°C. What is the total change in temperature? Add all the changes together for each rise and fall.
- Dexter
Dexter spent 1 2/3 hours working on his history homework and another 2 1/5 hours working on his math homework. How many hours did Dexter spend working on the two homework? - The height 4
The height and radius of a cylinder are 25 ft and 5 ft, respectively. What is the surface area? - Haley
Haley collected 1/2 of a bin of glass bottles to recycle. Tiana collected 2 3/4 times as many bins as Haley. How many bins of bottles did Tiana collect? - How much 6
How much does 1 kilo of beef cost if 6 kilos cost R189.90? - Liz makes
Liz makes footprints in the snow with her boots that are 3/4 foot long. Liz's feet are only 2/3 foot long. What expression can be used to find out how much longer Liz's boot prints are than her feet?
- Ricardo Ricardo is 1 9/10 metres tall. If Ricardo is 3/10 meters taller than Joan, what is Joan's height in meters?
- Pieces of wood
How many pieces of wood can each student have if there are 12 pieces and each student needs 1/4 of a piece? - Division by unknown What 3 divided by what = 21
- Water balloon
Tracy and her friends decided to have a water balloon fight! They got 20 water balloons and used 6 liters to fill them equally. How much water was in each balloon? Write your answer as a proper fraction or mixed number. - The temperature 45
The temperature in a field is 68°F at 4 PM. The temperature decreases by 4°F per hour. When will the temperature be 60°F?
- A farmer
A farmer produces apples and pears in a ratio of 7:6. If she harvests 42 tonnes of apples, how many tonnes of pears does he produce? - A rectangle 13
A rectangle measures 2 1/2 meters by 1 3/4 meters. What is its area? - There 32
There are 20 magazines in a pile. Each magazine is 5 mm thick. How high is the pile in meters? - FRAMES
Joe is making picture frames out of wood. The length of each frame is 10 inches, and the width is 8 inches. Each piece of wood used to make the frames is 8 feet long. How many pieces of wood will he need to make 10 picture frames? Clue: find the perimeter - Cake recipe
Joey has 3/5 of a cup of butter. For his cake recipe, he needs 3/4 of a cup of butter. What fraction of the recipe can he make? Please enter your answer in the simplest form.
Oscar needs to fill a sphere-shaped balloon with helium. If the balloon has a diameter of 8 inches, what is the total amount of helium that the balloon will hold to the nearest tenth?Do you have unsolved problem that you need help? Ask a question, and we will try to solve it. Solving math problems.
