Maths practice for 12-year-olds - page 25 of 349

Number of problems found: 6963

Dogs weights
Four out of nine dogs weigh less than 20 pounds. What is the decimal equivalent for the number of dogs weighing less than 20 pounds?
Simple form
Given ratio 45: 90 = Write the ratio in a Simple form
Vegetables
If 6 people want to share a 25-pound box of vegetables, how many pounds of vegetables should each person get?
Balloon
If a ceiling balloon rises at 120 m (about 400 ft) each minute, what is the ceiling of an overcast deck of stratus clouds 1500 m (about 5000 ft) thick if the balloon disappears into the clouds in 5 minutes? Show your solution.
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?
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?

Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.