Maths practice for 11-year-olds. - page 138 of 226
Number of problems found: 4508
- Salary increase month
Since the beginning of last year, Mr. Pilný had a monthly salary of CZK 10,520. From which month (1-12) was his salary increased by CZK 1,400 when he earned CZK 1,332,40 in a year? - Non-woven fabric
A square sandpit should have a side length of 1.6 m. How long do you need a wooden board to enclose the sandpit? Under the sandbox, a non-woven fabric will extend by 0.2 m on each side. How much will we need? - Floor tiling cost
How much will we pay for tiling the floor in the bathroom and the kitchen simultaneously? The kitchen is square with dimensions of 4.5 m, and the bathroom is rectangular with dimensions of 2.1 m and 1.8 m. We cover with tiles, 1 square meter of which cost - Missing numerals
John described the example but forgot the numerals. Fill them in so that the result is correct. (2 solutions): 3 3 3 3 = 8 - Letter puzzle
In the following additional example, the same letters represent the same digits, and the different letters represent different digits: RATAM RAD -------------- ULOHY Replace the letters with numbers so that the example is correct. Find two different repla - Water in a cube
How many ml of water will fit in a cube with an edge length of 5 cm? - What is one third
What is 1/3 as a decimal? Give your answer rounded to 2 decimal places. - Distance time
The cyclist covered a certain distance in 9 hours. How many hours does a car need to travel four times more if it moves three times faster? - Garden side measurement
The garden has an area of 1378 m2, side and measures 53 m. How much does side b measure? - Anti-birthdays
Štefka likes to celebrate, so apart from her birthday she came up with anti-birthdays as well: the date of anti-birthdays arises so that the number of the day and the number of the month in the date of birth are swapped. She herself was born on 8.11., so - Stone square drawing
They drew two stone squares out of 25 stones. Not a single stone must remain. - Cube Edge Size Volume
The road is paved with 2500cm cubic cubes. Calculate the edge size to the nearest millimeter. - Number deletion puzzle
Delete two digits from the number 547 191 807 to get the smallest number divisible by 5. Write the sum of the deleted numbers - Age sum calculation
The sum of the years of Simona, Carl, and Benjamin is 54. What will be the sum of their years by seven years? - Block cube edge The block and the cube have the same volumes of 512 cm3, and the block has edge lengths of b = 6.4 cm and c = 10 cm. Can a cube and a block have the same edge length?
- Discounted tents
The tent cost the same everywhere. During the autumn discounts, tents were also discounted. The tent is now discounted by CZK 280 in one store and by CZK 360 in another. In which store is it cheaper and by how much? Do you need to know the price of the te - Find x
Solve: if 2(x-1)=14, then x= (solve an equation with one unknown) - Trapezoid Billboard Area Gain
The advertising agency invented a new shape for billboards to attract attention - a trapezoid. How much more m² of area did they gain if the size of the classic billboard is 5.1x2.4 m and the dimensions of the trapezoidal billboard are 4.2 and 6 m bases a - Circumference - diamond
Calculate the area of a diamond that is 3.5 cm high and 16 cm in circumference. - Unknown number
I think the number. I'll reduce it to its one-third. The result is then increased by one-third, and I get the number 12.
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