# Arithmetic - math word problems

1. Unknown number 2 I think the number. When he reduces it four times, I'll get 11. What number am I thinking?
2. Fisherman Fisherman caught 32 fish, which is four times more than last year. How many fish he caught last year?
3. Cakes On the table was 56 cakes. When Peter went home, leaving them eight times less. How many cakes left?
4. Exhibition The teacher paid for 280 Kč for 4.A students for admission to the exhibition. How many students were on the exhibition?
5. Pumps 6 pump fills the tank for 3 and a half days. How long will fill the tank 7 equally powerful pumps?
6. Apples Mr. Vesely give to the market his own 48 kg of apples, 40 kg from Mr. Kovar and 72 kg of Mr. Novak. Grossed a total of 1,920 CZK. How must divide income money for apples?
7. Wallpaper Salesman account for 2.3 meters of wallpaper 149.50 Kc. How much cost 1 meter of wallpaper?
8. Chord distance The circle k (S, 6 cm), calculate the chord distance from the center circle S when the length of the chord is t = 10 cm.
9. Angles in triangle Calculate the alpha angle in the triangle if beta is 61 degrees and 98 gamma degrees.
10. Bicycle wheel Bicycle wheel diameter is 62 cm. How many times turns the bicycle on the road 1 km long?
11. Internal and external angles Calculate the remaining internal and external angles of a triangle, if you know the internal angle γ (gamma) = 34 degrees and one external angle is 78 degrees and 40 '. Determine what kind of triangle it is from the size of its angles.
12. Annulus Calculate the area of two circles annulus k1 (S, 3 cm) and k2 (S, 5 cm).
13. Lesson exercising The lesson of physical education, pupils are first divided into three groups so that each has the same number. The they redistributed, but into six groups. And again, it was the same number of children in each group. Finally they divided into nine equal g
14. Office rent For rent 1m2 of office space is paid €165 per year. How much is the annual rent for an office as big as a football field with dimensions 71.5 m and 102.5 m?
15. Cube 3 How many times will increase the volume of a cube if we double the length of its edge?
16. Cube 2 How many times will increase if the surface area of the cube if we triple length of its edge?
17. Cuboids in cube How many cuboids with dimensions of 6 cm, 8 cm and 12 cm can fit into a cube with side 96 centimeters?
18. Cube How many times increases the surface area of a cube with edge 23.4 cm if the length of the edge doubled?
19. Soil pit Workers dug a pit cube with edge 2.5 meters. How many cars shall remove soil if the car suddenly take 4m³ of soil?
20. Three Titanics Three steamers sailed from the same port on the same day. The first came back on the third day, fourth 4th day and the third returned sixth day. How many days after leaving the steamers met again in the harbor?

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