Maths practice for 11-year-olds. - page 29 of 224
Number of problems found: 4480
- Prism base volume
A three-sided prism with a base in the shape of an equilateral triangle has a volume of 370 dm³. What is the volume of its base if it is 50 cm high? - Cream price liter
700 ml of whipped cream costs €4.99. We bought 6 of them for €29.94. How much does 1 liter of whipped cream cost? - Cube surface volume
The surface of the cube is 150 dm². Calculate its volume. - Rectangular base - II
Calculate the volume of a pyramid with a rectangular base with sides a = 7 cm, b = 5 cm, and height of the pyramid v = 13 cm. - Pyramid volume base Calculate the volume of a regular quadrilateral pyramid with a square base of side a=8 cm and a height of the pyramid of 11 cm.
- Number addition multiplication
If I add 5 to this number, I get the same result as multiplying it by 5. What is that number? - Sugarcane harvest yield
3.6 tons of sugarcane were harvested on the experimental plot of 0.2 ha. How many tons of sugarcane can be harvested on a plot of land of 18.6 hectares with the same yield per hectare? - Landing pad width
There is a 30 cm layer of sand in the landing area. Determine the width of the landing pad if its length is 5 m and the volume of sand in it is 2.7 m³. - Foundations dimensions
The house has foundations of 12x8m. How many cubic meters of gravel do we need if we want to fill it to a depth of 10 cm? - Number difference quotient Multiply the difference between the numbers 13202 and 23 by the quotient of these two numbers.
- Notebooks - purchase
The teacher bought for her class (for each student), in which there are 15 students, notebooks for €0.30, books for €4.50 and special pens for €2.80. How much did they have left in the class fund when they had €200 there? - Carpet floor uncovered
In a rectangular room with dimensions of 3.5 m and 4 m, a square carpet with a side of 3 m is laid on the floor. How many m² of the floor is not covered by carpet? - Floor laying cost How much will we pay for laying a wooden floor in the living room of an apartment with dimensions of 40dm and 50dm if 1 square meter of wooden floor costs 12.4 euros?
- Cube edge volume Calculate the edge of a cube with a volume of 150 cubic cm.
- Fence paint consumption
Mr. Konečný used 0.9 kg of paint to paint an 8 m long and 1.2 m high fence. a) How many kg must he buy when he will paint a 35m long fence of the same height? b) How much paint will Mr. Malík need for a fence 1.5m high and 42m long. - Pit soil volume
The lime pit has the shape of a quadrilateral prism with dimensions of 2m, 1.8m, and 1.5m Calculate the pile volume from the excavated soil, which, due to fluffing, is 20% larger than the volume of the pit. - Unknown number calculation
I divide the unknown number by 2 and then add 4 to the result, which gives me 22. What is the unknown number? - Number digital sum Calculate the digital sum of the given numbers and arrange the results in descending order: 356,1078,39,4402
- Dimension of foundations
The foundation pit for building houses has a face of blocks with dimensions of 10 meters, 10 meters, and 2 meters. After a heavy rain, the water is filled to the brim. The pump pumps out 10 m³ of water in 1 hour. In how many hours will the pit be empty? - Notebook purchase rounding
Lucka bought a notebook for CZK 28.60 and a notebook for CZK 14.50. How many crowns did the saleswoman round off the price of her purchase? How many CZK did she return to fifty crowns?
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