# Examples for 7th grade (seventh) - page 90

1. Pound2kilos How many pounds make 1 kilograms?
2. Recipe A recipe requires 2 pounds of flour. If a chef wants to triple the recipe, how many ounces of flour will be needed? Cris had 15000 . He spent 1/3 of his money on a table and the remaining on 5 similar chairs that cost the same. How much did one chair cost?
4. Examination 2 In an examination, a teacher awards 2 marks for every correct answer and subtract a mark for every wrong answer. If there are 20 questions and a child scored 25 marks how many correct answer did the child get?
5. Proportion 3 For every 8 mango trees in the orchard, there are 4 star apple trees. If there are 1320 trees, how many trees of each kind are there?
6. A sculptor A sculptor is duplicating a statue based on an original statue. If the scale factor of the replication is 3.2, will the new statue be larger or smaller than the original statue (enter 1 = larger, 0= smaller)
7. Missing number Blank +1/6 =3/2 find the missing number
8. Aquarium I have an aquarium that is 100 cm long and 40 cm wide and 40 cm in height. We fill it with water. How much will it weigh?
9. Bag of peanuts Joe eat 1/3 of a bag of peanuts, mark eat 1/4 of the remaining in the bag of peanuts, Alvin eat 1/2 of the remaining bag of peanuts, peter eat 10 peanuts, there are 71 peanuts left. Hon many peanuts were in the bags?
10. One third If 3/5 is 360, how much is 1/3?
11. Divide Divide the number 72 in the ratio 7: 2 and calculate the ratio of the numbers found in this order and write down as decimal.
12. Eq-frac Solve the following equation with fractions: h + 1/3 =5/3
13. RPM An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?
14. The temperature 3 The temperature is -12 degrees Fahrenheit. During the following 5 hours the temperature decrease 23 degrees Fahrenheit what is the temperature at 11 pm?
15. Diameter of a cylinder I need to calculate the cylinder volume with a height of 50 cm and a diameter of 30 cm.
16. Fraction + eq Solve following simple equation with fractions: -5/6(8+5b) = 75 + 5/3b
17. Athletic club All athletic club boys lined up by size. In front of Peter was one-eighth of the total. Right behind Peter stood his brother Radek and behind Radek another five-sixths of the total number of boys. Mark the unknown total number of athletic club boys x. .
18. Steel tube The steel tube has an inner diameter of 4 cm and an outer diameter of 4.8 cm. The density of the steel is 7800 kg/m3. Calculate its length if it weighs 15 kg.
19. Chauncey Chauncey is building a storage bench for his son’s playroom. The storage bench will fit into the corner and against two walls to form a triangle. Chanuncy wants to buy a triangular shaped cover for the bench. If the storage bench is 2 1/2 ft. Along one w
20. Stock market 2 A number cube is rolled and a coin is tossed. The number cube and the coin are fair. What is the probability that the number rolled is greater than 2 and the coin toss is head?

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