Maths practice for 11-year-olds. - page 31 of 230
Number of problems found: 4588
- Process 81358
Teo went around the pool twice. He took 160 steps in the process. He took 25 steps along the length. How much area does the pool take up, and how long is Tro's stride? 0.5m? - Inventory of bottles
Determine the standard inventory of mineral water bottles for smooth operation if the restaurant needs 18,000 half-liter bottles per year. The delivery cycle of goods is 14 days. The minimum insurance stock is set at 5 days. How many liters of mineral wat - Cube-shaped 81332
The gardener collects rainwater in a cube-shaped container with an edge length of 80 cm. How many 16-liter buckets will he fill with water from a full reservoir? - Indistinguishable 81236
There are 32 red socks and 32 blue socks in a drawer. The left and right socks are indistinguishable. You pull your socks out of the drawer in the dark. How many do you have to take out to make sure you have a pair when you look at them? - Production 81205
How many figurines can a potter make from 133 1/3 kg of clay if he needs 4/15 kg of clay to make one and 1/20 of the material is wasted during production? - Twenty-five 81187
Twenty-five prizes are drawn in a raffle with 500 tickets. How many tickets do we need to buy to ensure I win at least 3 prizes? - Difference 81141
Calculate the difference between the sum and product of the numbers -7 and -2.
- Cubes 81088
How many cubes with an edge of 1 cm fit into a cube with an edge of 1 m? - Cubes 81080 How many cubes with an edge of 1 mm fit into a cube with an edge of 1 cm?
- Three fractions times
Eight thirds×nine quarters×twelve fifths - Determine 81038 Determine the width of a rectangle with an area of 14.5 cm square and a length of 5 cm.
- Rectangle pool
The cube-shaped pool is 50 m long and 16 m wide. They poured 12,000 hl of water into it. Calculate the surface area of the pool that is wetted by water. - Smaller 81015
Divide the area S=153 m² of the square garden in a ratio of 2:7. What part of the garden does the smaller part occupy? - Red candles
For Christmas, the Veselá family made gel candles. Father Veselý filled the entire jar with green gel. Mother Veselá filled one-sixth of the jar with green gel and the rest with red. The daughter used the same amount of green and red gel, and the son pour - Diameter 81003
The pot has a diameter of 24 cm and a height of 5 dm. How many liters of water are in the pot if it is half full?
- Volume 81001
The volume of the cuboid is 3/25 m³. The base area is 6/25 m². What is its height? - Calculate 80995 Calculate the cube's surface with the edges of the length: 2 half cm, 3.5 cm; it is a quarter of a cm.
- Minutes 80992
Three eggs are cooked in 15 minutes; how long will it take to cook 15 eggs at once? - Denominator 80875
Given a fraction whose denominator is 2 greater than its numerator. If we increase both the numerator and the denominator of this fraction by 7, we get the fraction 5/6. Which fraction is it? - Dimensions 80848
We want to cover a wall with dimensions of 4m x 250cm with square marble tiles with the largest possible dimensions of the sides of the tiles so that there are no losses caused, for example, by cutting them during tiling. How many tiles will we need for t
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