Maths practice for 11-year-olds. - page 31 of 227
Number of problems found: 4530
- Dimensions 80848
We want to cover a wall with dimensions of 4m x 250cm 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 t - Calculate 80793
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. - Hydrostatic 80790 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. - Education 80771
Miška finished ninth fastest and fifth slowest in physical education class. How many girls ran in PE class? - Toothpaste 80763
Little Jirka 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 ne - Unknown 80760
If we add 5 to twice the unknown number, we get the number 6.02
- Determine 80754
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. - Dimensions 80753
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? - Between 80751
A cork floats on a bowl of water. Is the action between the water and the cork static or dynamic? - Dimensions - cardboard The statements are sold in cardboard boxes – for example, the microwave oven box has dimensions of 52 cm, 32 cm, and 40 cm, and 0.4 m² of cardboard is added to the folds. How many square meters of cardboard are needed for 1,000 boxes?
- Calculate: 80736
Gaius Julius Caesar was born in 100 BC. He was murdered when he was 56 years old. Calculate: a) in what year was he murdered? b) How many years ago was he born? c) How many years ago did he die? - Subtract 80730
I think a number. If I multiply it by three and then subtract 120, I get the number 900. What is that number? - Remaining 80727
In the hotel, half of the people live on the first floor, a third on the second floor, and the remaining 40 guests live in the attic. What is the capacity of the hotel if it is 3/4 occupied? - Permitted 80726
The highway section is 25 km long, and the maximum permitted speed is 110 km/h. The driver covered this section in 12 minutes. Did he exceed the speed limit?
- Construct 80719
Construct a rectangle ABCD if a = 8cm and the length of the diagonal AC is 13cm. Measure the length of the sides of the rectangle. - Traveled 80715
A mass point traveled a distance of 600 m in 2 minutes in uniform motion. How fast was it moving? - Rectangle 80701
One side of the rectangle has length a=9/5 cm, and the length of side b is 7/10 cm greater than the length of side a. Calculate the perimeter and area of the rectangle. - Children 80653 The children in the camp slept in a cottage with 17 2-bed and 25 3-bed rooms. Other children slept in 8 cabins. Each had 1 4-bed and 1 3-bed room. All rooms and beds were occupied. How many children were in the camp?
- Classroom 80652
The classroom is 11 m long, 6.5 m wide, and 4 m high. I will pay 14.50 for 1 m² of painting. How much will it cost to paint the classroom?
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