Maths practice for 11-year-olds. - page 46 of 224

Number of problems found: 4478

Steamer port return
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?
Cuboid volume units
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 - tiles
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.
Oak wood density
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?
Asphalt barrel density
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 - water level
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?
Gas pipeline excavation
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
Egg cooking time
If eight eggs are cooked in 10 minutes, how long will it take to cook 28 eggs?
Aquarium fish water
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
Milk carton weight
One milk container weighs 80g. What is the weight of a package of 12-liter milk cartons?
Cube-shaped crates
A shipment of 2560 cubic dm of dried Secret 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?
Grid symmetry painting
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
Stork average speed
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?
Number divisibility replacement
Which number should replace the letter X so that the number 7618X is divisible by three and four?
Number divisor sum
Calculate the sum of all divisors of the number 70.
Sauna wood paneling
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?
Parking car capacity
The department store has a rectangular car park with a length of 48 m and a width of 65 dm. How many cars can there fit when each car needs 2.5 m²?
A rectangular prism
A gift box in the shape of a rectangular prism measures 8 by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box? Explain. What is the surface area of the gift box?

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