Maths practice for 12-year-olds - page 217 of 348

Number of problems found: 6951

Incorrectly 7492
The test has 50 questions. Four points are counted for each correct answer, 3 points are deducted for an incorrect answer, and 2 points are deducted for an unanswered question. Peter scored 108 points on the test but answered only 6 questions. How many qu
Conservationists 7490
The conservation unit planted clearings on 4/7 (this is a fraction) on Saturday; on Sunday, he had 2,100 trees to grow. How many trees have conservationists planted on both days?
Area to volume
If the surface area of a cube is 486, find its volume.
Determine 7488
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.
Incorrectly 7484
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 7482
1dm square - 7000mm 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.
Smallest 7478
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 7463
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
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?
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?
Adjusted 7455
The watch is 1/4 minute ahead of the clock. We adjusted it at 7 AM. How much do they show at 3 PM?
Months 7453
What part of the year is 6 (1,3,10,4) months?
Calculate 7451
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 7449
Find such a fraction to the fraction that their product is equal to 8/11, 4, 1/100, 13/4, 1/3
Three-fifths 7447
Silvia had a certain amount of money in her wallet. She spent a third of it on stationery and spent three-fifths of the remaining money on groceries. She has €76 left. How much € did Silvia initially have in her wallet?
A tile
A tile setter is covering a 5ft by 5ft square shower wall. Each tile covers 4 5/8in by 4 5/8in a square. How many rows of tile are needed to reach 5ft? How many tiles are needed to cover 5ft by 5ft square

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