1. Cube 2
How many times will increase if the surface area of the cube if we triple length of its edge?
2. Circle from string
Martin has a long 628 mm string . He makes circle from it. Calculate the radius of the circle.
3. Decide
The rectangle is divided into seven fields. On each box is to write just one of the numbers 1, 2 and 3. Mirek argue that it can be done so that the sum of the two numbers written next to each other was always different. Zuzana (Susan) instead argue that.
4. Roses and tulips
At the florist are 50 tulips and 5 times less roses. How many flowers are in flower shop?
5. Football team
Football team has in store black, purple and orange shirts, blue and white shorts and striped and gray socks. How many different outfits players may start?
6. Charles Bridge
Charles Bridge was 15 times older than Frantův bridge from 1900 in 1931. How old is the Charles Bridge?
7. Wood lumber
Wooden lumber is 4 m long and has a cross section square with side 15 cm. Calculate: a) the volume of lumber b) the weight of the lumber if 1 m3 weighs 790 kg
8. Perpetrator
The perpetrator is a number that is smaller than the number 80. It is a multiple of five and it is odd. If we added up the tens and ones of this number we get number 8.
9. Tank
To cuboid tank whose bottom has dimensions of 9 m and 15 m were flow 1080 hectoliters of water. This was filled 40% of the tank volume. Calculate the depth of the tank.
10. 15 number
What number is smaller (greater) by 15 than its half?
11. 2d shape
Calculate the content of a shape in which an arbitrary point is not more than 3 cm from the segment AB. The length of the segment AB is 5 cm.
12. The shop
The shop has 3 hectoliters of water. How many liter bottles is it?
13. Tank
How many minutes does it take to fill the tank to 25 cubic meters of water filled 150hl per hour?
14. Sales off
Calculate what was the original price of the good, if the price after discount 25% and the subsequent rise of 20% is 400 USD.
15. Plot
The plot on which Mr. Kalous is to build a house has the shape of a rectangle. On a 1: 500 scale, its dimensions are 7cm and 5.5cm. Find out the dimensions of the plot. Calculate the parcel size.
16. Cube
How many times increases the surface area of a cube with edge 23.4 cm if the length of the edge doubled?
17. Lcm 2
Create the smallest possible number that is divisible by numbers 5,8,9,4,3
18. Troops
If the general sorts troops into the crowd by nine left 6. How many soldiers has regiment if we know that they are less than 300?
19. Cube edge
Determine the edges of the cube when the surface is equal to 37.5 cm square.
20. Car model
Car model is 52 mm long and the real car is 4524 mm long. What was the scale of model car?

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