Maths practice for 12-year-olds - page 326 of 351
Number of problems found: 7015
- Olympics
How many ways can six athletes be placed on the podium at the Olympics? Depends on the color of the metal. - Printing pages
The printer prints one page in 4 seconds. However, it warms up for 30 seconds before printing. Express how many seconds it will take to print 84 pages. - Mortgage
Family XY wants to take the bank mortgage (a loan for an apartment/house) for € 100,000. Bank processing the mortgage charges a fee of 0.79% of the amount borrowed. How many euros is this fee? - One-third
A one-third of an unknown number is equal to five times as great as the difference between the same unknown number and the number 28. Find the unknown number. - Timeage
Seven times my age is 8, less than the largest two-digit number. How old am I? - Jumps
At least how many jumps must a frog do to overcome the distance of 7 meters? The jump of a frog is 18 cm long. - Briefcase
The cost of producing a briefcase is € 45. The manufacturer wants to sell it at a profit of 30%. How much will the briefcase sell for? - Obtuse angle
Which obtuse angle is creating clocks at 17:00? - Temporary 1637
Three temporary workers will clean 60 meters of the sidewalk in 5 hours. How many meters of sidewalk will clean by seven temporary workers in 8 hours? - Remainder 1634
The work crew will excavate 1/4 of the channel on the 1st day, and 1/2 of the remainder on the 2nd day. Third day 1/3 of what she dug the second day. What part of the canal in km still needs to be dug after the third day, if the length of the canal is 72 - 7 roses
Peter bought seven roses. When he paid for them, he had 4 euros left. If he had bought five roses, he would have had 40 euros left. Thus, Peter had 40 euros before the purchase. - Reduced 1631
Three times the number reduced by 10 is as much as 100, as 100 is more than twice that. What is the number? - Unknown number 5
I think of an unknown number. If we enlarge it five times, then subtract 3, and the result decreases by 75%, we get one greater than the number. What number am I thinking? - Store
Peter paid 3 euros in-store, more than half the amount on arrival at the store. When he left the shop, he had 10 euros in his wallet. How many euros does he have upon arrival at the store? - Difference 1628
If I add the ratio, the product, the difference, and the sum of the unknown number and the number 2, I get the number 72. What is this unknown number? - Stamps and albums
Michail has stored 170 stamps in three albums. In the first album, there are 14 more than in the second, and in the second, there are 1/5 less than in the third. How many stamps are in the first album? - The classroom
In the seventh class, the number of boys and girls is at a ratio of 4:5. Boys are 16. How many total students are in the classroom? - Stairs
Between adjacent levels are 15 stairs. If the step were 1.2 cm shorter, there would be 16 stairs. What is the stair height? - Isosceles trapezoid v3
In an isosceles trapezoid ABCD is the size of the angle β = 123° Determine size of angles α, γ and δ. - Mr Novak
Mr. Novak earns an average 927 euros. When increasing the salary, they gave him a choice: ... What is a better choice for Mr. Novak?
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