1. Compare Compare fractions ?. Which fraction of the lower?
2. It is rectangular? Size of two of the angles in a triangle are: α=110°, β=40°. Is it a right triangle?
3. Numbers Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?
4. Rainfall Annual rainfall in our country are an average of 797 mm. How many m3 of water rains on average per hectare?
5. Cats Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days?
6. Two squares Two squares whose sides are in the ratio 5:2 have sum of its perimeters 73 cm. Calculate the sum of area this two squares.
7. Alcohol How many 55% alcohol we need to pour into 14 liters 75% alcohol to get p3% of the alcohol? How many 65% alcohol we get?
8. Chamber In the chamber light is broken and all from it must be taken at random. Socks have four different colors. If you want to be sure of pulling at least two white socks, we have to bring them out 28 from the chamber. In order to have such certainty for the pai
9. Ravens The tale of the Seven Ravens were seven brothers, each of whom was born exactly 2.5 years after the previous one. When the eldest of the brothers was 2-times older than the youngest, mother all curse. How old was seven ravens brothers when their mother cur
10. Area of trapezoid The trapezoid bases are and 7 dm and 11 cm. His height is 4 cm. Calculate the area of trapezoid.
11. Time Write time in minutes rounded to one decimal place: 5 h 28 m 26 s.
12. Cherries Cherries in the bowl can be divided equally among 19 or 13 or 28 children. How many is the minimum cherries in the bowl?
13. Theater The theater has in each row with 19 seats. Ticket to the first 10 rows is for 30 USD. In next rows is for 15 USD. The theater was completely sold out. Revenue was 12255 USD. How many rows are in the theater?
14. Present Gift box has rectangular shape with dimensions of 8×8×3 cm. Miloslav wants to cover with square paper with sides of 18 cm. How much paper left him?
15. Wage Increasing the minimum wage while maintaining the other parameters of the system, unemployment will be:
16. Camp In the camp are children. 1/2 went on a trip, 1/4 went to bathe and 38 children remained in the room. How many children are in camp?
17. Bricks Brick has volume 2.2 dm3. How many bricks can drive truck with capacity 23 ton? The density of brick is 1.6 g/cm3.
18. Maximum area of rhombus Calculate the interior angles at which equilateral rhombus has a maximum area.
19. Greenhouses Two workers would make installation of greenhouses for 54 hours. For how many hours does the installation 9 workers?
20. Gear Two gears, fit into each other, has transfer 2:3. Centres of gears are spaced 82 cm. What are the radii of the gears?

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