Maths practice for 11-year-olds. - page 16 of 230
Number of problems found: 4585
- 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.
- Parallelogram 43
A parallelogram has a perimeter of 20.4 m. One of its sides is 5.5 cm long. Calculate the length of the other side.
- 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?
- Padded 2
How many square meters are needed to make 40 pieces of wooden padded equilateral triangles with sides of 30 cm and heights of 26 cm?
- Apples from grandma
There were apples on the table. Milan took 1/3. There were 6 apples left on the table. How many apples did Milan take?
- Pillar 4
The pillar is 10 meters high. The edge is 90 cm. How many bricks are needed to build it? 1 brick has a volume of 1.2 dm³.
- Water lily
The father placed 4 containers with water lilies in the built pond. The containers had the shape of a cylinder with a diameter of 55 cm and a height of 27 cm. How many liters are all the water lily containers?
- Density of a cube
Calculate the density of a cube if the height is 8 cm and the mass of the cube is 3 kg.
- Round up - fountain
A fountain, which is cylindrical in shape with a base diameter of 2m, is 25cm deep. How many liters of water can it hold? Round the result to a whole number.
- Iron rod
What is the mass of a cylindrical iron rod with a length a = 9 m and a diameter d = 6 cm? The density of iron is 7,800 kg/m³. Express the result in kilograms, and round to the nearest whole number.
- On a bicycle 5
Klára left Hořické náměstí on her bicycle and rode to Hradec Králové at an average speed of 20 km/h. Jenda left the same square on his bicycle 15 minutes after Klára left and moved in the same direction as Klára at an average speed of 30 km/h. How long di
- A quarter of a gram
How much is three-quarters of 200 grams?
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