Maths practice for 11-year-olds. - page 45 of 230
Number of problems found: 4585
- Collection 67874
In his stamp collection, Radek had half of the Czech stamps, a third of Slovak stamps, and just 128 overseas stamps. Radek did not collect any other stamps. Calculate how many stamps Radek had in the collection. - Ten-thousandths 67844
Calculate how many times six-hundredths is greater than 12 ten-thousandths. - Steamers 67804
Two steamers set out on a voyage from the same port. The first steamer returns to port every fourth day, and the second steamer returns every fifth. How many days do they meet again? - Calculate 67794
Calculate the volume of the cuboid in the given unit if you know the lengths of its edges. A) a = 20 cm, b = 3 cm, c = 7 cm, (length) B) a = 10 mm, b = 8 mm, c = 9 mm, (ml) C) a = 30 cm, b = 5 cm, c = 8 cm, (l) D) a = 300 mm, b = 4 m, c = 7 dm, (hl) - Dimensions 67784
Earthenware tiles have 20 cm, 20 cm, and 2 cm dimensions. The package, which has ten pieces of tiles, weighs 20 kg. Determine the density of the stoneware from which the tiles are made. - Density 67774
The prism, whose base is square / the side of the square is 20 cm / 30 cm high, is made of oak wood and weighs 8.5 kg. What is the density of oak wood? - Determine 67764
The barrel filled with asphalt has a diameter of 60 cm and a height of 100 cm. The weight of the asphalt in it is 390 kg. Determine the density of the asphalt.
- Aquarium 67724
The aquarium measures 40 cm, 40 cm, and 50 cm. The water reaches 45 mm from the upper edge. Norbert bought the fish, and when he put them in the aquarium, the step level was 0.5 mm. What is the volume of new fish? - Water level
In the pool, which is 15 m long, 6 m wide, and 2 m deep, the water level is 20 cm below the edge. How many hectoliters of water are in the pool? - Constructing 67634
During the construction of a 140-meter-long gas pipeline, a pit with vertical walls 1.5 m deep and 1 m wide must be created. A) How many cubic meters of soil must be dug up? B) We spread the excavated soil evenly on a field with dimensions of 70 m and 120 - Minutes 67614
If eight eggs are cooked in 10 minutes, how long will it take to cook 28 eggs? - Dimensions 67534
Peter has an aquarium at home in the shape of a cuboid with 6 x 3 dm bottom dimensions and a height of 4 dm. They filled the aquarium with water according to the seller's order, 5 cm below the edge. A) The maximum number of fish can be raised in it if 1 f - Container 67524
One milk container weighs 80g. What is the weight of a package of 12-liter milk cartons? - Cube-shaped 67514
A shipment of 2560 cubic dm of dried Tajemstvi arrived in eight identical cube-shaped crates. What is the height of one crate if it has a square base with an edge length of 8 dm and each crate is filled to the brim? - Measuring aquarium We poured 3 liters of water into an empty aquarium measuring 30x20 cm and 25 cm high. What is the level?
- Symmetrical 67454
How many more squares in the grid in the picture need to be painted to make it centrally symmetrical? square - x x; o; o; x o; o; x; o x; o; o; o o; x; o; o This is a sketch of a grid where the colored squares are x. Thank you, Lucy - Average 67404
The stork moves to Africa for the winter for an average of 10 hours a day and flies around 650 km. At what average speed does the stork move? - Divisible 67304 Which number should replace the letter X so that the number 7618X is divisible by three and four?
- Calculate 67294 Calculate the sum of all divisors of the number 70.
- Cube-shaped 67274
In the basement, they have a cube-shaped room with an edge length of 2.5m, which has no windows, only a door with dimensions of 2*1m. They decided to make a Finnish sauna in it. How many square meters of wood paneling will they need?
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