Maths practice for 11-year-olds. - page 33 of 213
Number of problems found: 4252
- Rectangle width area
Determine the width of a rectangle with an area of 14.5 cm² and a length of 5 cm. - Rectangle pool
The cube-shaped pool is 50 m long and 16 m wide. They poured 12,000 hl of water into it. Calculate the surface area of the pool that is wetted by water. - Garden area ratio
Divide the area S=153 m² of the square garden in a ratio of 2:7. What part of the garden does the smaller part occupy? - Red candles
For Christmas, the Veselá family made gel candles. Father Veselý filled an entire jar with green gel. Mother Veselá filled one sixth of the jar with green gel and the rest with red. The daughter used the same amount of green and red gel. The son poured on - Pot water half
The pot has a diameter of 24 cm and a height of 5 dm. How many liters of water are in the pot if it is half full? - King of Bohemia
King of Bohemia Charles IV divided the entire family wealth among all his descendants. Wenceslas IV received 5/18; his younger brother Sigismund of Luxembourg received 1/9 less than Wenceslas IV. Jan Zhořelecký was assigned 6/63. Which of these three brot - Cuboid height base
The volume of the cuboid is 3/25 m³. The base area is 6/25 m². What is its height? - Cube surface Calculate the cube's surface with the edges of the length: 2 half cm, 3.5 cm; it is a quarter of a cm.
- Egg cooking time
Three eggs are cooked in 15 minutes; how long will it take to cook 15 eggs at once? - Fraction numerator denominator
Given a fraction whose denominator is 2 greater than its numerator. If we increase both the numerator and the denominator of this fraction by 7, we get the fraction 5/6. Which fraction is it? - Wall marble tiles
We want to cover a wall with dimensions of 4 m x 250 cm with square marble tiles with the largest possible dimensions of the sides of the tiles so that there are no losses caused, for example, by cutting them during tiling. How many tiles will we need for - Liquid mass volume
The liquid has a specific gravity of γ = 9050 N. m-3. Calculate its specific gravity, the mass of 2 m³ of this liquid, and also of 3 m³ of this liquid. - Liquid specific gravity The hydrostatic pressure at a depth of 6.5 m in an open liquid container is 79.5 kPa. What is the specific gravity of this liquid?
- Copier paper
A standard package of printer and copier paper is labeled 80 g/m2, which means that one square meter of such paper weighs 80 g. How much does one sheet of A4 size (dimensions 210 × 297 mm) weigh? The result is rounded to whole grams. - Miška race placement
Misha finished ninth fastest and fifth slowest in physical education class. How many girls ran in PE class? - Toothpaste cylinder length
Little George wanted to know how much toothpaste was in the tube, so he gradually squeezed it all out and there was a cylinder of toothpaste in the room. Can you guess how long it might have been? Calculate the values: the internal diameter of the paste n - Unknown number twice
If we add 5 to twice the unknown number, we get the number 6.02 - Sheep shepherd legs
There were 45 sheep and several shepherds in the meadow. After half of the shepherds and a third of the sheep left the meadow, the remaining shepherds and sheep had a total of 126 legs. All sheep and all shepherds usually had leg counts. how many shepherd - Triangle congruent sides
The perimeter of triangle MAK is 216 mm, side a = 81 mm, and side k = 62 mm. Determine the side length of the triangle OSA if the triangle MAK is congruent to the triangle OSA. - Block wall painting
We color a wooden block with dimensions a = 4 cm, b = 3 cm, c = 2 cm and then cut it into cubes of 1 cm³. How many cats will she have? a) just one wall painted b) just two walls stained c) just three walls painted d) no painted wall?
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