Maths practice for 11-year-olds. - page 99 of 224
Number of problems found: 4480
- Roof repair
To repair the roof, we need 15 pieces of boards 6 m long, 15 cm wide, and 25 mm thick. If 1 m³ of boards costs 500 euros, how many euros will we pay for all the boards? - Ice volume calculation
What is the volume of 320 kg of ice floes in liters? - Number sixth puzzle
If we subtract its sixth from the number's triple number, we get half of that number increased by 28. What is the number? - Cuboid wall area
Hello, I want to ask about the solution and procedure for my task, which is a cuboid with sides a=5cm, b=4 cm, and c=10 cm. Calculate the area of the blue wall. Calculate the area of the yellow wall. Calculate the area of the green wall. Calculate the sur - Triangle bar division
How many identical triangles do the middle bars divide the triangle ▲? - Divisible by nine How many three-digit natural numbers in total are divisible without a remainder by the number 9?
- Board paint calculation
Štěpán painted a block-shaped steel board measuring 2.2 m, 1.5 m, and 1.6 m twice with a protective coating. How many kilograms of paint would he consume if he used 120g of paint per 1m²? - Calculate
Calculate the surface of a regular eleven-sided prism; if the area of its base is 58 cm2, the edge of the base is 6cm long, and the height of the prism is 21 cm. - Cycling distance
Daddy cycles the distance. 15 km in three-quarters of an hour. What distance will he travel in an hour? How long will it take for the son to cover this distance, which travels at an average speed of 15km per hour? - Rectangle perimeter division
Divide a rectangle with 60mm and 84mm sides into three rectangles with the same perimeter draw by calculating. Find the dimensions of the rectangles after division. - Tank painting calculation
We painted a closed cube-shaped oil tank with an edge length of 1.5 meters twice with a protective coating. How many kilograms of paint did we use if 1 kg of paint is enough for 10 square meters? How many liters of oil are in the tank if it is filled to t - Convalescent homes
In 270 convalescent homes, 94,270 vacationers spent part of the holiday a year. On average, how many vacationers per convalescent home? - Isosceles trapezoid
Find the area of an isosceles trapezoid with bases of 8cm and 72mm. The height of the trapezoid is equal to three-quarters of the longer base. - Radar signal distance
The electromagnetic signal sent by the radar bounced off the plane and returned in 60 microseconds. How far is the plane? - Pedestrian speed comparison
One pedestrian walked the 16km track in 3.12 hours Two pedestrians walked the 18km track in 3.18 hours Which one had a higher average speed on its track? - Pool water calculation
The bottom of the garden pool of circular cross-section has an inner diameter of d = 4 m. The water depth is 0.8 m. How many liters of water can we fill into the pool? - Aquarium
How many liters of water can fit in an aquarium measuring 30, 15, and 20 cm? - Even number formula
Write a formula for an even number x if y denotes any odd number. - Angle size calculation
Calculate the size of the BVC angle if the following applies to the size of the angles: AVB = 37 ° 48 minutes, CVD = 52 ° 30 minutes, AVD = 118 ° - Prism volume calculation
Calculate the volume of a 1.4 m high hexagonal prism container with a base area of 8300 cm².
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