Maths practice for 11-year-olds. - page 16 of 222

Number of problems found: 4426

In the kitchen 2
In a kitchen measuring three by two meters, we want to lay square tiles with sides of 20 cm on the floor. If there are exactly 40 tiles in one package, how many such packages do we need to buy to cover the entire kitchen? (We place the tiles right next to
Running race
The running race consists of two stages. Two-thirds of the competitors completed the first stage, and only three-quarters of them completed the second stage. Only 12 competitors reached the finish line. Determine how many competitors were at the start and
Wands - Wizard
The number promised the wizard Rhododendron that she would teach him a lot about numbers, but he must solve her riddle: My two magic wands measure 63 cm together. One is 7 cm longer. How long are her wands?
Trainers 3
Trainers start in six steps, eight steps, nine steps, and ten steps. Each time they have one trainee left. How many trainees were there?
Number 17
The number of boys in the class is k and the number of girls is m. How many euros will the class cashier collect from them for a theater performance if one ticket costs 4.25 euros?
A sixth of a million
Please, how much is 2/6 of 10,000,000,- USD?
Asphalt - road
2933 kg of asphalt is how many m³? Use the density of asphalt as 2400 kg/m³. Help: Natural asphalt (bitumen): 1.01 – 1.05 g/cm³ (1010 – 1050 kg/m³) Asphalt mixture (for roads): 2.2 – 2.5 g/cm³ (2200 – 2500 kg/m³) Contains mineral aggregates, so it is dens
Into the bottle
The bottle can hold water weighing no more than 1 kg. Can you pour gasoline weighing the same amount into this bottle?
Stay - CK
A holiday stay costs 14,200 CZK for one person. If you pay for your stay by the end of March, the travel agency offers a discount of 4,500 CZK. How much CZK will two people pay for the trip if they pay for it by the end of March?
Bathroom 3
The bathroom measures 300x210 cm. What are the largest square tiles and how many will I need to cover the floor?
Volume of gasoline
There is 1200 kg of gasoline in the tank. The density of gasoline is 0.75 g/cm³. Calculate the volume of gasoline.
All zeros
How many zeros does the product of the numbers 10.11.12.13.14.15.20.21.22.23.24.25 end with?
In an aquarium 3
In an aquarium 60cm long and 30cm wide, water is poured to a height of 25cm. Determine the mass of the water in the aquarium.
Saleswoman 3
The saleswoman cut 650 cm from a piece of a 30-meter and 60-cm long batten. How much fabric did she have left?
Oval running
Jan runs around the circumference of a circle with a diameter of 24 m. How many kilometers will he run if he goes around the circle four times?
Chocolate 10
Anička bought three identical chocolates. Tonda bought 5 identical chocolates. Tonda paid 8 euros more than Anička. How much did one chocolate cost?
Ice rink
A rectangular rink measuring 15m and 20m long needs to be covered with a layer of ice 4.5cm high. How many liters of water are needed to create ice?
A quarter of the trees
There were 48 apple, pear, and plum trees growing in the garden. A third of the trees were apple trees and a quarter were pear trees. How many plum trees were there in the garden?
Salaries - inflation
Dad's salary was increased by 5:4. His original salary was 880€. What is his salary now?
Anna had 2
Anna had 2x more than Betka. Cilka had 12 euros more than Anna. Together, they had 92 euros. How much did each have?

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