Maths practice for 12-year-olds - page 234 of 350
Number of problems found: 6985
- Triangles
Hanka cut the 20 cm long straws into three pieces. Each piece had a length in cm. Then, with these three pieces, she tried to make a triangle. a) What circuit has each of the triangles? b) How long can the longest side measure? c) How many different trian - Equilateral 6306
We composed the diamond of four equilateral triangles with a side length of 7 cm. What's his circuit? - Sand
The maximum weight of the car is 5000 kg. We must transfer 10 m³ of sand. How many times does a car have to go? (density of sand is 1500 kg/m3) - Children 6303
A total of 56 children went on a trip to the pupils of the two fourth grades. That 4A was four pupils more than 4. B How many pupils from each class went on a trip? - Sponsor
The children of the tennis school received 64 white and 48 yellow balls from the sponsor. When asked about how many balls they could take, they answered: "You have so many that none of you will have more than ten balls, and all will have the same number o - Orienteering 6301
Twenty-six girls and 39 boys took part in the orienteering race. Create as many of the same teams as possible so that no competitor is left. How many boys and how many girls are on the team? - Kilograms 6297
If Adam and Boris weigh a total of 75 kg, Boris and Cyril weigh a total of 83 kilograms, and Cyril and Dano weigh a total of 92 kg, how many kilograms do Adam and Dano weigh together? - Cook Island map
On the Cook Island map, the cycling trail measures 0.025 m. A cyclist moving at a constant speed of 15 km/h will cover the entire trail in 2/3 hours. Determine the scale of the Cook Island map. - It is 2
It is 90 feet from home plate to the first base on a baseball diamond. What is the area of the baseball diamond in square yards? - Parallelogram 6288
Find the interior angles of the parallelogram if you know that one of them is 50 degrees larger than the other. - Helicopter 6287
On the map, at a scale of 1:1100000, the aerial distance between Martin and Brezno measures 5.5 cm. Calculate the aerial distance covered by the helicopter when it flies from Martin to Brezno and back. - Measures 6278
The cotton fabric in the bale in the store measures 101/5 meters. How many 10/7 meter suits can we sew from the whole bale of fabric? - Birthday 6277
Peter got a new bike for his birthday. His bike was equipped with many gears. How many gear options does Peter have if you have three wheels at the front and eight wheels at the back? List them all - Cuboid and cube
A block with edges of lengths of 10 cm and 8 cm has the same volume as a cube with an edge of the length of 1 dm. Calculate the third dimension of the block. Compare the ratio of the surfaces of both bodies. - One-eighth 6274 How many children are in a class where one-eighth is three children?
- Contribution 6273
Vojta and Martin have been contributing to charity since the same day. Vojta contributes 110 CZK every week. Martin contributes 85 CZK every week, and in addition, he made a one-off contribution of 300 CZK at the beginning. Calculate how many weeks Vojta - Simultaneously 6272
The first inflow fills the tank in 4 hours and the second tributary in 6 hours. How long will it take to fill both tributaries simultaneously, but the species will start an hour later? - Pexeso
The drawing paper has dimensions of 60cm and 840mm. Pupils have to divide it into squares to make a pexeso. What dimension must squares have if their side is larger than 3cm and less than 10cm? - Individual 6270
Divide three lines with lengths of 12 cm, 24 cm, and 64 cm into equally long and, at the same time, the most extended possible parts. How long will the individual parts be, and how many will there be? - Harvested 6269
Five workers harvested fruit in 150 hours. How many temporary workers have to work to harvest fruit in 250 hours?
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