Maths practice for 11-year-olds. - page 105 of 222

Number of problems found: 4433

Empty barrel
In the backyard is an empty barrel with a volume of 2 hl. How many liters are missing at the edge when 53 liters flowed into it for one day and 68 liters of water for two days?
Measuring 26891
What is the smallest square space we can tile with tiles measuring 25 x 15 cm, knowing there will be no need to cut them? How many tiles will we use?
The plan
The plan of the housing estate is on three scales 1:5000,1:10000,1:15000. The distance between two points on a plan with a scale of 1:10000 is 12 cm. What is this distance on the other two plans? What is this distance?
Cylinder-shaped 26631
What is the volume V (dl) of a cylinder-shaped mug if it is 8cm high and its figure is 7cm?
Equilateral 26601
The gardener filled the flowerbed with crushed stone in the shape of an equilateral triangle with an 8-m-long side. If 25 kg of crumb was consumed per 1 m² of the area, how much crumb was used for the whole flower bed?
Triple density
How many times does the density of a steel pipe increase if we triple its length?
Five-sevenths 26511
Of the 35 students in the 7A class, there were five-sevenths on the trip. How many students stayed at home?
Disembarkation 26501
The escalator in the subway is moving at a speed of 0.7 m/s. Determine his debt if the time from the boarding to the disembarkation of the passenger elapses 62.3 s
The sum
The sum of five consecutive odd numbers is 75. Please find out the sum of the second and fourth of them.
Aquarium height
How high does the water in the aquarium reach if there are 36 liters of water in it? The length of the aquarium is 60 cm, and the width is 4 dm.
Multiplied 26421
The number x decreases by 10, the result is multiplied by six, and you get the number 18
Pizza palace
Josh is at Enzo's Pizza Palace. He can sit at a table with 5 of his friends or at a different table with seven friends. The same size pizza is shared equally among the people at each table. At which table should Josh sit to get more pizza? (write the answ
Dimensions 26401
How many square meters of wallpaper will we need to cover the walls of a room with dimensions of 3 m and 4 m if the room height is 2.5 m? A door with dimensions of 90 cm and 2 m leads to the room. There is one window 1 m wide and 1.5 m high.
Quarter 26363
There were buns in the basket on the table. Josef ate half of the half, Eva ate the rest, Katka ate two buns, and Dunčo ate a quarter. How many buns were on the table?
Aquarium 26311
The bottom of the aquarium measures 30 cm and 50 cm. To what height will the aquarium be filled if 60 liters of water are poured into it?
Circumference 26251
Calculate the circumference of a pizza with a diameter of 62 cm. How big is the plate on which it is placed when it covers it?
Divisors of 560
Which of the numbers 5, 6, 7, 14, and 15 are divisors of 560? Please justify the answer.
Vegetables 26181
There were 50 liters of water in two barrels. Katka took several liters of water from the first and watered the vegetables in the garden. From the second, Kamil took as much water as was left in the first barrel and watered the flowers in the garden. How
The missing digit
Complete the missing digit in the number 3 ∗ 43 to form a number divisible by three. If there are multiple options, list them all. (The omitted digit is marked with the symbol ∗. ) Answers must be justified!
Prime factors
Factor the number 6600 into the product of prime numbers.

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