Maths practice for 12-year-olds - page 218 of 351
Number of problems found: 7018
- Cube Surface Ratio Edges
The lengths of the edges of the two cubes are in the ratio 2:3. Determine how many times the surface of the larger cube is larger than the surface of the smaller cube. - Test Points Correct Incorrect
Tomáš was given the task of solving 10 problems. He received 3 points for each correctly solved, and 4 points were deducted for each incorrectly solved. He scored a total of 9 points. How many tasks did he solve correctly, and how many incorrectly or not - Square millimeter conversion
1 dm square - 7000 mm square - Marriage sttus
In our city, 3/5 of the women are married to 2/3 of the men. Find what part of the population is free. - Mice of Each Color
The hat has 14 grays, eight white, and six mice. What is the smallest number of mice we have to pull out of our hats to ensure we have at least one mouse of each color? - Far country
In a country far away, the value of 3 pesos is 12 centavos, more than the value of 1 peso. How many centavos is 1 peso worth? - The florist
The florist had 200 roses in the morning. During the day, more than half sold it. The remaining roses will be tied to the bouquet. One always remains if a bouquet of 3, 4, 5, or 6 roses is bound. How many roses from the morning shipment were sold? - The lowest
The lowest temperature on Thursday was 20 °C. The lowest temperature on Saturday was 12 °C. What was the difference between the lowest temperatures? - Three-digit number puzzle
Dominika wrote a three-digit number ending with the number 6. When she crossed out the last digit and wrote it at the beginning of the number, she noticed that the new number was as much greater than 600 as the original number was less than 600. What numb - Flooring a room
Find the cost of flooring a room 6.5 m by 5 m with square tiles of sides 25 cm at the rate of rupees 9.40 per tile. - The average
The average of one set of 4 numbers is 35. The average of another set of numbers is 20. The average of the numbers in the two sets is 30. How many numbers are there in the other set? - Three Siblings Ball Cost
The three siblings bought a ball together. Lada continued to pay half of the money, Mira a quarter, and the rest, CZK 20, paid by Norbert. How many crowns did the ball cost? - Coal mine
The monthly plan of 17,000 tons of coal exceeded the mine by 1/25. How many tonnes of coal have been harvested from the mine above plan? - Watch time difference
The watch is 1/4 minute ahead of the clock. We adjusted it at 7 AM. How much do they show at 3 PM? - Year month fraction
What part of the year is 6 (1,3,10,4) months? - Car Speed and Distance
The car will cover a certain distance in 3 hours and 20 minutes. If he increases his speed by 10 km/h, he will cover this distance in 2.5 hours. Calculate this distance. - Fraction product puzzle
Find such a fraction to the fraction that their product is equal to 8/11, 4, 1/100, 13/4, 1/3 - A tile A tile setter is covering a 5 ft by 5 ft square shower wall. Each tile covers 4 5/8 in by 4 5/8 in a square. How many rows of tile are needed to reach 5 ft? How many tiles are needed to cover 5 ft by 5 ft square
- Fraction comparison puzzle
How many times is a quarter of an eighth smaller than a third of a sixth? - Cube
The sum of all cube edges is 30 cm. Find the surface area of the cube.
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