Maths practice for 11-year-olds. - page 29 of 222
Number of problems found: 4421
- Roland plot perimeter
Roland rode his bike around the perimeter of the square plot and traveled 5km. What is the length of the side of a square pitch? - Aquarium depth capacity
The aquarium is 0.7m long and 25cm wide. The battery is deep if it can hold no more than 87.5 liters of water. I need help understanding how to calculate this. - Aquarium water total
The zoo purchased two aquariums for marine animals. The first can hold 3,577 liters of water. The second aquarium can hold 455 liters less water than the first. How many liters of water can the aquariums hold together? - Circle triangle hole
Calculate the area of the circle in which the hole is cut in the shape of an equilateral triangle when the diameter of the circle, d=32mm, and the side of the triangle, a=20.8mm. - Cylindrical pool
The Novak family bought a cylinder-shaped pool with a base radius of 200 cm and a volume of 31.4 hl. Could the grandson safely jump if he is 120 cm tall? - Mom cake remainder
Mom baked cakes. She set aside a third of them for her father. She left the rest on the table. Rišo came and ate a third of the cakes that were on the table. What fraction of all the pies was left on the table? Write the result in fractions. - Dividing nuts
How many nuts would we need at least to divide the nuts equally among 10 or 18 children? - Rectangle side area
Calculate the size of the other side of the rectangle if the size of one of its sides is 90m and the area is 3600 m². - Cube substance density
What kind of substance is it if it is enclosed in a cube with a volume of 8 m³ weighing 110 kg and the entire cube weighs 115.78 kg? - Children group division
There are 42 children in the yard, and they want to divide into groups of four. How many groups of four can they make, and how many children will they raise? - Skier semicircle distance
A skier skis down a black slope. He makes a total of 31 half-circles while going down the hill. The radius of one semicircle is 4m. What distance did he travel? - Pinocchio nose length
Pinocchio's nose is 11 cm long. If he lies, it will be extended by 10 cm. If he tells the truth, he will be 7 cm shorter. Pinocchio lied 6 times and told the truth 8 times. How long is his nose now? - Glass label paper
We want to stick labels on the glasses. The labels stick right around the glass. The diameter of the cup is 6 cm. The height of the label is 10 cm. a) How many labels will we make from 30 x 40 cm paper? b) How many papers of this size will we use to make - Remote control wood
Calculate how many dm² of wood the craftsman needs to make a block-shaped wooden remote control stand with dimensions of 3.2 dm, 2.4 dm, and a height of 0.6 dm. - Juice glass liters
Katka celebrated her birthday with four friends. Each girl drank two two-cup glasses of juice. How many liters of fluid did they drink? - Number quarter comparison
Hello, this year I am doing the entrance exams for secondary school. I wanted to ask if I have an example: HOW MANY TIMES is a quarter of the number 1.5 smaller than the number 4 1/2, and I don't know what to do with that? HOW MANY TIMES will I add, subtr - Car dealer customers
A car dealer found that 1/2 of his customers bought French, 1/3 of German, and 1/6 (20) American cars. How many customers did the car dealer have? - Runner training duration
How long will training for an endurance runner last if he plans to run 36 km at a speed of 5 m/s and spends 35 minutes warming up? - Cube surface area
What is the largest surface area of a square glued together from 12 identical cubes with an edge length of 1 cm? - Warehouse painting cost
The warehouse has the shape of a cuboid with dimensions: length of 50 meters, width of 600 decimeters, and height of 300 centimeters. Calculate how much it will cost to paint a windowless room with a door 150 centimeters wide and 200 centimeters high (the
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