Maths practice for 12-year-olds - page 210 of 347
Number of problems found: 6930
- Pool capacity
The pool is 30 m long, 12 m wide, and 2 m deep. Can it contain 7,000 hl of water? If so, what is the level? If not, how much extra water is there? - Flowerbed
Andrew digs the garden bed in 20 minutes and Jake does it in 30 minutes. How long does it take them working together? - Tony works
Tony works as a welder for a construction company. His hourly wage is $15.51, and he works 40 hours per week. Tony gets paid vacation each year. The construction company is doing well and has plenty of work for the next year. Tony can expect to work the e - Expression value puzzle
Number 1 is the value of the expression: a 5-3 b. 22 - 32 c. (2 - 3)² d. 2 - 32 e. 32 - 22 - Opposite sum difference
The opposite sum of numbers 12 + 13 adds the opposite number of their difference. Which of the following is correct? - The thermometer
At 8:00 in the morning, the thermometer showed an outside temperature of 16.7 degrees. It rose by 2.6 degrees in two hours. What temperature did we have at 10:00? - Cube cutting calculation
How many can small cubes with a 1cm long edge cut from a cube with a 3cm long edge? - Aquarium
Find how many dm² of glass we need to make a block-shaped aquarium (the top is not covered) if the dimensions are to be a width of 50 cm, length of 120 cm, and height of 8.5 dm. - Bus lines
At 5.00 in the morning, four buses left the terminal at the same time. The first bus has an interval of 15 minutes, the second 20 minutes, the third 25 minutes, and the fourth 45 minutes. How many minutes will all four buses leave the terminal at the same - Wood dividing
Which equation calculates the number of 1/3-foot pieces that we can cut from a piece of wood that is 7 feet long? - Pencil cut
Veronica cut a 10cm pencil. Each turn, the pencil was reduced by 0.2mm. She turned the pencil 100 times. How many centimeters has a pencil now? - Poplar
How tall is a poplar by the river if we know that 1/5 of its total height is a trunk, 1/10th of the height is the root, and 35m from the trunk to the top of the poplar? - National park
In the national park, the ratio of the wooded area to grassland is 4:1. The total area is 385 km². What area is wooded? - Orange juice
In the morning, the buffet has three types of juice: 6 orange, 4 apple, and 2 currant. In three hours, half of the currant juice and half of the apple juice were sold. No one had ordered orange juice by then. What fraction of the total initial juice suppl - Filling Cylindrical Pool
The outdoor pool has a cylindrical shape with an inner diameter of 3.6 m and a depth of 1.2 m. a) how long will it take to fill if 2 liters of water flow per second? b) how many crowns will it cost to fill the pool? (find out the price of 1 m³ of water. ) - Cylindrical Container Volume The cylindrical container should have a volume of 1 liter and a height of 15 cm. What will be its average height?
- Water Height Cylinder Diameter
How high will 1 liter of water in a cylindrical vessel with a bottom diameter of 8 cm reach? - Juice Container Diameter Volume
What diameter will a 20 cm high cardboard juice container have to fit half a liter? - Connected 3 gears
There are three connected gears. Wheel A has 30 teeth, wheel B has 15 teeth, and wheel C has 20 teeth. How many turns does wheel A make when wheel C turns nine times? a) 6, b) 5, c) 4 d) 8 - Photo Enlargement Dimensions
The photo has 6 cm and 9 cm dimensions and should be enlarged 8:3. What will be the dimensions after magnification?
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