Maths practice for 12-year-olds - page 320 of 347
Number of problems found: 6932
- 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? - Number operations
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? - Candy
Peter had a sachet of candy. He wanted to share it with his friends. If he gave them 30 candies, he would have 62 candies. If he gave them 40 candies, he would miss eight candies. How many friends did Peter have? - 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? - Rope slack
Between two streets, 20 m away, give the lamp in the middle and hang 60 cm below the taut rope. Can it be done with a 20.5 meters rope? - Pizza master
Master says that he can split pizza into 16 parts by five equals straight cuts. Is it possible? - Buing
Brother got to buy 240 CZK and could buy for 1/8 what he wanted. Could he pay the rest of the purchase for 200 CZK? - Trapezoid perimeter
The bases of the isosceles trapezoid measure 110 m and 50 m. The distance between the bases is 40 m. Calculate its circumference. - Angles ratio
In an ABC triangle, is true relationship c is less than b, and b is less than a. Internal angles of the triangle are in the ratio 5:4:9. The size of the internal angle beta is: - 9-gon
The sum of interior angles of 9-gon is: - The chord
A chord passing through its center is the side of the triangle inscribed in a circle. What size are a triangle's internal angles if one is 40°? - Aunt
Annie's aunt is 35 years old, and Annie is 14 years. For how many years will aunt have twice as many years as Annie? - Little hand
What angle shifted the little hand on the clock after one hour and 38 minutes? - Clock Tower
What angle is between the hands-on Clock Tower when it shows 17 hours and 35 minutes? - Greenhouse
The Garden plastic greenhouse is shaped like a half-cylinder with a diameter of 6 m and a base length of 20 m. At least how many m² of plastic is needed for its cover? - Cuboid
How many times will the volume of a cuboid increase if one dimension is twice larger, the second dimension three times larger, and the third dimension four times lower?
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