Maths practice for 12-year-olds - page 289 of 362
Number of problems found: 7223
- Perimeter 3573
The carousel wheel has a diameter of 138 meters and has 20 cabins around the perimeter. What circuit does the bike have? - Options 3572
We roll three dice. Write down all the feast options. - Hectoliter into cube
Can 1 hl of water fit into a half-meter cube? - Percentage 3566
Calculate to two decimal places. What percentage is: a / 15min from 4 h b / 35 cm² of 12.5 dm² c / 2 dm² of 400 cm² d / 0.2 l of 2.2 l - Smokovec 3565
On a tourist map with a scale of 1:20 000, the distance between Starý Smokovec and Nový Smokovec is 24 cm. What is the actual distance? - Equation with x
Solve the following equation: 2x- (8x + 1) - (x + 2) / 5 = 9 - Measures 3563
What is the actual length of the road, which measures 5 cm on a 1:250000 scale map?
- Calculate 3562
The 16 cm long string is 6 cm from the circle's center. Calculate the length of the circle. - Calculate 3561
There is a 12 cm long chord in a circle with a radius of 10 cm. Calculate the distance of the chord from the center of the circle. - Multiply 3560
If we multiply the number by 4, I get a third of the number 36. Specify an unknown number. - Percentage 3557
They increased the price of the social word game SCRABBLE from SKK 600 to SKK 900. By what percentage did they increase the price of the game? - Hall
The rectangular hall will have to pave with square tiles with a side length of 15 cm. The hall has a length of 18 meters and a width of 3 m. How many tiles need to buy if 2 percent of the amount is disrupted during the work? - Hypotenuse 3554
Calculate the hypotenuse length if you know the area of an isosceles right triangle that is 24.5 cm square. - Triangle 3552
Draw a circle k (S, r = 3cm). Build a triangle ABC so that its vertices lie on the circle k and the length of the sides is (AB) = 2.5 cm (AC) = 4 cm - Percentage 3550
There are 35 pupils in the class, and 7 of them are active in sports. What is their percentage?
- Percentage 3549
A fresh mushroom weighs 8 kg. After drying, it weighed 96 dag. What percentage of water do fresh mushrooms contain? - Percentage 3548
Nine tons of potato flour are obtained from 50 tons of potatoes. What percentage by weight of potatoes is potato flour? - Percentage 3547
Quality control found that out of 4,200 products, 3,074 were perfect. What percentage did the scraps represent? - Inequality: 3538
Example1: Solve a linear equation and perform a test: 6x- (3x + 2) = x-8 Example 2: Solve a linear inequality: 3y + 2 * (y + 1) ≥2y-7 - Percentage 3537
The bakery increased the price of croissants from 1.90 CZK to 2.50 CZK. By what percentage did the bakery rise in price?
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