Maths practice for 12-year-olds - page 29 of 351

Number of problems found: 7018

Nathalia
Nathalia spent 1 1/2 hours in an online class, and it took 2 2/3 hours to answer her module. How long did Nathalia spend time in studying?
Cement and sand
Rasmus mixes cement with sand for some repair work. He used 3 5/6 kg of cement and 1/2 kg more sand than cement. In all, he needs 10 kg of the mixture. Does he have enough mixture? If yes, then how much more does it have? If not, then how much more does h
Carol 2
Carol bought 5 snow hats and 2 pairs of gloves. The hats were priced at $12, and each pair of gloves cost the same amount. If the total amount of Carol's purchase is $135, what was the cost of 1 pair of gloves?
Frank's
Frank's mom baked several pies and cut them, so each slice is 1/16 of a pie. Frank plans to eat 8 5/8 pies. How many slices will frank eat?
Peter multiplies
Peter try to calculate: 3/4 x 2/3 He did 3x3 to get 9 and 4 x 2 to get 8. The final answer is 8/9. Can you explain the error and how to help? What is the correct answer?
Martha 3
Martha placed 225 liters of water into a child swimming pool that holds 3.8 hectoliters. How much more water does Martha need to fill the pool?
What is 29
What is a fifth of 2,50kg?
A biology
A biology experiment required pouring 2/9 liter of nutrient solution and 2/3 liter of pure water into a tank. At the end of the experiment, 3/10 liter of fluid had evaporated. How much fluid was left in the tank?
Temperature drops
It is 5 degrees at sunset. The temperature drops 11 degrees during the night. What is the temperature in the morning?
A bamboo plant
I cut 3 1/6 m off of a bamboo plant 4 1/2 m high. How big was it after I cut it down?
Difference and mixed numerals
What is the difference between seven and three-sixteenths minus four and nine-sixteenths? Write your answer in word form.
A scuba
A scuba diver swims to a depth of 12 15/16 meters below sea level. Which of the following shows the decimal representation of -12 15/16? Write as decimal value...
School time
If Martin started school at 8:30. If he spent 6 3/4 hours in school, what time did he leave school?
Evaluate expression 10
Evaluate expression: (a-b)+c if a=7/10, b=3/5, and c=-1.9. Write your answer as a mixed number in simplest form.
Tool room
A 9' x 15' tool room was enlarged to 11' x 20'. How many square feet of floor space was added?
A trapezoid 4
A trapezoid has a height of 12 feet and base measurements of 15 feet and 10 feet. What is the area?
An oil 2
An oil tin contains 3 3/4 liters of oil which 2 1/2 liters of oil is used. How much oil is left over?
Same remainder
Find the greatest number that will divide 43, 91, and 183 so as to leave the same the remainder in each case.
An expression
Find an expression representing the difference when (-4x - 5) is subtracted from (10x - 5) in simplest terms.
The perimeter 12
The perimeter of an equilateral triangle is 41.46 inches. If the length of each side is (q - 5.7), what is the value of q?

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