# Examples for 7th grade (seventh)

1. Square s3 Calculate the diagonal of the square, where its area is 0.49 cm square. And also calculate its circumference.
2. Rails 18 m railway weighs 1260 kg. How much weighs 100 m of welded railways?
3. Average speed What is the average speed you have to move the way around the world in 80 days? (Path along the equator, round to km/h).
4. Cube edge Determine the edges of the cube when the surface is equal to 37.5 cm square.
5. Cube 5 The content area of one cube wall is 32 square centimeters. Determine the length of its edges, its surface and volume.
6. Unknown number 7 16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number.
7. Three children 3 children eat 8 chocolates in 6 days. How many chocolates 6 children eat in 18 days?
8. Cancer Of the 80 people 50 people ill cancer. What percentage of people isn't ill?
9. Runner 2 Marian run 12 meters in 8 seconds. How far would Marian run for 70 seconds, if still run at the same pace?
10. Raspberries Dano had 20 raspberries. John had 90% more raspberries than Dano. Determine how many raspberries have Dano and Juraj together.
11. Unknown number 5 Daniel think an integer. When he change this number at a ratio of 2:5 he got number 2.8. Determine what number think Daniel.
12. Unknown number 6 Determine x if 1/6 of x is equal to 2/5 of the number 24.
13. Equation Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
14. Volume and area What is the volume of a cube which has area of 361 cm2?
15. Cargo Car with cargo weight 7610 kg. Weight of car is 23% of the total weight of car and cargo. How heavy is cargo?
16. Shots Determine the percentage rate of keeper interventions if from 32 shots doesn't caught four shots.
17. Average speed Michal went out of the house by car at speed 98 km/h. He came into the goal place for 270 minutes. Determine the distance between the two places.
18. Weightlifter Weightlifter lifted 75% of its weight. Determine how much weight lifted when he weighs 132 kg.
19. Grass Peter and Stano lawn grass for 3 hours 12 minutes. How long would it take to Peter if Stano lawn grass himself for 384 minutes.
20. Pedestrian Dana started at 10:00 from the point A to point B. These points are distant 12 km. Determine how fast Daniel went when the place B arrived at 11:54. Speed express in km/h.

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