Maths practice for 11-year-olds. - page 28 of 225
Number of problems found: 4488
- Snowman's 82155
Under the column, the children built a 1.65m tall snowman. The snowman's shadow is 135 cm long. The shadow of the column has a length of 4.05 m. How tall is the pole? - Equilateral 82136
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? - Whipped 82128
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? - Calculate 82077
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. - Quadrilateral 82052 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.
- Multiplying 82021
If I add 5 to this number, I get the same result as multiplying it by 5. What is that number? - Experimental 82019
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? - Determine 82012
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 82009
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? - Difference 82005 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? - Rectangular 82001
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? - Dimensions 82000 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?
- Calculate 81990 Calculate the edge of a cube with a volume of 150 cubic cm.
- Konečný 81976
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. - Quadrilateral 81975
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 81923
I divide the unknown number by 2 and then add 4 to the result, which gives me 22. What is the unknown number? - Descending 81911 Calculate the digital sum of the given numbers and arrange the results in descending order: 356,1078,39,4402
- Dimensions 81909
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?
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