# Examples for 7th grade (seventh) - page 60

1. Divisible by 5 How many three-digit odd numbers divisible by 5, which are in place ten's number 3?
2. Family Son is 3/5 smaller than the mother. Mother is 99 cm higher than the son. How tall is the mother?
3. Scale 3 Miriam room is 3.2 meters wide. It is draw by line segment length 6.4 cm on floor plan. In what scale it is plan of the room?
4. Equation ?
5. Orchard 3/5 of the trees in the orchard are apples, 1/3 are cherries and the remaining five trees are pear. How many trees are in the orchard?
6. Conva How many liters of water fit into the shape of a cylinder with a bottom diameter 20 cm and a height 45 cm?
7. Acreage Plot has a diamond shape, its side is 25.6 m long and the distance of the opposite sides is 22.2 meters. Calculate its acreage.
8. Masons 1 mason casts 30.8 meters square in 8 hours. How long casts 4 masons 178 meters square?
9. School library The school library contains 6300 books. With this constitutes 7% of professional books for teachers 18% interest books and encyclopedias for pupils and the rest of the fairy tales. How much are which books?
10. Street numbers Lada came to aunt. On the way he noticed that the houses on the left side of the street have odd numbers on the right side and even numbers. The street where he lives aunt, there are 5 houses with an even number, which contains at least one digit number 6.
11. Compare: What is bigger? ?
12. Failure Drivers of passenger cars have calculated that at a speed of 60 km/h arrives at destination within 40 minutes. After 20 km refrain five minutes due a technical failure. How fast must go the rest of the way to the finish came at the scheduled time?
13. Tailor Tailor bought 2 3/4 meters of textile and paid 638 CZK. Determine the price per 1 m of the textile.
14. Iron cast What is the weight of cast iron with volume 3575 cubic centimeters. The density of the cast iron is 7600 kg/m3
15. Colza In the agricultural cooperative harvested 525 ares of colza, of which received 5.6 tons of seeds. Calculate the yield per hectare.
16. Sum of three numbers The sum of three numbers from which second number is 20% smaller than the first number and the third number is 25% smaller than the second number is 96. Determine this numbers. The car was loaded with 78 boxes weighing 19 kg. How many 25kg boxes can load if the total weight is the same?
18. Two ages Gabrielle is 9 years younger than Mikhail. The sum of their ages is 87. What is Mikhail's age?
19. Cooling liquid Cooling liquid is diluted with water in a ratio of 3:2 (3 parts by volume of coolant with 2 volumes of water). How many volumes of coolant must be prepared for a total 0.7 dm3 (liters) of the mixture?
20. Two circles Two circles with a radius 4 cm and 3 cm have a center distance 0.5cm. How many common points have these circles?

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