Maths practice for 11-year-olds. - page 79 of 223
Number of problems found: 4456
- Cubes 47583
How many small cubes do we get when we cut a cube with an edge of 27 cm into cubes with an edge of 3 cm? - Beginning 47553
At the beginning of the year, they received 600 notebooks. There were twice as many unlinked as lined ones. How many students are in the class when each has 16 unlined notebooks? - Empty aquarium
How much does an empty aquarium weigh with dimensions: length = 40 cm, width = 30 cm, height = 20 cm, if 1 dm² of glass weighs 300 g? Calculate its weight in kilograms. - Humans
Humans exploring space have left behind bags of trash, bolts, gloves, and pieces of satellites. Let's say there are currently about 5,000,000 pounds of litter in orbit around Earth. Jenny says that this amount is five billion, using the number names. - Cylinder container
If the cylinder-shaped container is filled with water to a height of 5 dm, it contains 62.8 hectoliters of water. Calculate the diameter of the bottom of the container. Use the value π = 3.14. - Balthazar 47301
Balthazar walked ten steps 7.4 meters. How long is Baltazar? - Dredged 47291
The pit for the pool will be 30 meters long, 15 meters wide, and 2 meters deep. How many cubic meters of clay need to be dredged? - Evaluate expression
Evaluate the following expression: 5 to the power of 2 - (4x4) divided by two = - Electric wire
William has a piece of wire that measures 1 yard long. He will use wire to fix several electrical outlets in his house. How many inches long is the wire? Solve this problem using bar diagrams. - Main/central vertex
ABC is an isosceles triangle with base BC and central vertex A. The angle at vertex A is 18°. What will be the size of the angle at vertex B? - Shortcut
The road from the cottage to the shop 6 km away leads either along a straight road that the bicycle can drive at a speed of 18 km/h or by "shortcut". It measures only 3.6 km. But the road from the cottage is all uphill - at a speed of 8 km/h, you can go h - Grandfather 47061
My grandfather made a fence around his rectangular garden measuring 7.2 meters and 12 meters. How many meters of mesh did he have to buy, and how much did he pay if one meter of mesh was € 5.90? - Row for lunch
There are less than 66 people in a row for lunch. In front of Eva, there are 28 students. Behind Martin, there are 30 people. Between Eva and Martin, there are 17 people. How many students would stand behind Eva if Martin stood in front of Eva? - Consecutive 47033
The sum of three consecutive odd numbers is 183. What is the largest of them? - Simplify:
Simplify: 8(−9 − 5x) + 4b use x = 9 and b = −9 - Cylindrical 46983
62.8 hl of water per hour flows through the pipe into an empty cylindrical tank with a bottom diameter of 8 m. In 4 hours, the tank will be filled to what height? - One-sixth 46943
Peter planted 220 kilograms of potatoes, and he produced twelve times more. One-sixth of the proceeds were earmarked for next year. How many tons of potatoes to eat were harvested? - Seconds flying
The hot air balloon flew for 8 hours, 8 minutes, and 8 seconds. How many seconds did it take to fly 10 hours? - Employees 46923
The new water supply pipeline is to be 1.2 km long. Employees put it from both ends. On one side, 0.492 km of pipeline is laid, and on the other side, 53,500 cm of a pipeline. How many meters of pipe are left to lay? - Quarter-liter 46873
We filled half the jug with water. We poured this water into quarter-liter cups. Five cups filled to the brim, the sixth only half its volume. What is the volume of the pitcher?
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