Maths practice for 11-year-olds. - page 192 of 223
Number of problems found: 4457
- The cube
The cube has a surface area of 486 m². Calculate its volume. - Variables: 3140
Determine the value of the expression 3a + 2b - a² - 4b² for the values of the variables: a) a = - 1, b = 3 b) a = 2, b = -1 c) a = -2, b = -3 d) a = 4, b = 2 e) a = -5, b = 0 - Joining 3 cubes
We place three identical cubes with an edge length of 3 cm on top of each other. What is the surface of the resulting block? - Different points
Mark 4 different points O, P, R. S. Mark of line OP, OR, OS. Measure the marked lines. - Cylinder
The cylinder-shaped container has 80 liters of water. The water reaches 45 cm in height. How many water liters will be in a container if the water level extends to a height of 72 cm? Write the result in liters. Write down only as a whole or decimal number - Container 3134
How many 15ml syringes can be filled from a 0.0045m³ container? Write the result as an integer. - Centimeters 3131
111 square centimeters of sheet metal are used to produce one part. How many of the most parts can we make from sheet metal with dimensions of 3 m wide and 0.75 m long? - Bottom 3129
How many m² tiles do we need to line the walls and bottom of the pool in the shape of a block 25 m long, 10 m wide, and 180 cm deep? - Land
The land has a rectangular shape, and its surface area is 1.45 hectares. Its width is 250 m. Determine the length of the land. - Granite cube
What is the weight of a kilogram granite cube with an edge of 0.5 m if 1dm³ of granite weight 2600 g? - Plot
The plot on which Mr. Kalous is to build a house has the shape of a rectangle. On a 1:500 scale, its dimensions are 7cm and 5.5cm. Find out the dimensions of the plot. Calculate the parcel size. - Square tiles
The room has dimensions of 12 meters and 5.6 meters. Determine the number of square tiles and their largest dimension to cover the floor exactly. - Cyclist and car
A cyclist who runs at a speed of 20km per hour will arrive at the finish in 4.5 hours. How fast does the car have to drive the same route in 2 hours? - Dimensions 3086
The red cube has an edge 0.2 dm smaller than the blue cube. The surface of the blue cube is 294 cm². What are the dimensions of the cubes? - Racehorses
Racehorses and jockeys have a total of 168 feet. How many horses were together at the start? - Mr. John
Mr. John wants to buy winter apples Spartan. There are two ways to buy: 1) buy apples at the marketplace, where 1 kg costs 15 CZK. 2) Bring the car to the agricultural farm, where the apples are sold for 9 CZK per kilogram. However, he must pay CZK 150 fo - Simplify
Simplify the following problem and express it as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5] - Decompose
Decompose into primes and find the smallest common multiple n of (16,20) and the largest common divisor D of the pair of numbers (140,100) - Decompose 3076
Decompose into primes and find the greatest divisor of the pair of numbers D (84.70). - Rectangular flowerbed
Around the rectangular flowerbed with dimensions of 5.25 m and 3.50 m, roses should be planted at the same distance from each other so that they are located in each corner of the flower bed and consumed as little as possible. How far do we plant them? How
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