Examples for 7th grade (seventh) - page 69

1. Photo enlarge
Mark wants to enlarge a 4-inch by 6-inch photo so that it has a height of 15inches. Use a ratio table to determine the new width of the photo.
2. Candy
Peter had a sachet of candy. He wanted to share with his friends. If he gave them 30 candies, he would have 62 candies. If he gave them 40 candies, he would miss 8 candies. How many friends did Peter have?
3. Unknown numbers
The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
4. Clubhouse
There were only chairs and table in the clubhouse. Each chair had four legs, and the table was triple. Scouts came to the clubhouse. Everyone sat on their chair, two chairs were left unoccupied, and the number of legs in the room was 101. How many chairs w
5. Two cuboids
Find the volume of cuboidal box whose one edge is: a) 1.4m and b) 2.1dm
6. Five pumps
The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
7. Soda
A pack of 12 sodas cost 5.04. What is the unit rate in dollars per soda?
8. Bathroom 2
A bathroom is 2.4 meters long and 1.8 meters wide. How many square tiles 1 dm on each side are to be used to cover it?
9. Unknown number
I think the number - its sixth is 3 smaller than its third.
10. Rainfall
How many liters of water did fell in a 32m long and 8m wide garden, if 8mm of rain fell?
11. Suzan
Susan's age will be after 12 years four times as much as twelve years ago. How old is Susan now?
12. Trapezium bases
Find the trapezium height if a = 8 cm and c = 4 cm if its content 21 square centimeters.
13. Trapezoid ABCD
ABDC is a trapezoid in which AB and CD are parallel sides measuring 6 and 9 respectively. Angles ABC and BCD are both right angles. Find the length of segment BD.
14. Cubes into cuboid
How many 12 centimeter cubes fit into the block (cuboid) with 6dm, 8,4dm and 4,8?
15. Pears
There were pears in the basket, I took two-fifths of them, and left six in the basket. How many pears did I take?
16. Summands
Find two summands of the number 42, so that its product is minimized.
17. Square area
Complete the table and then draw each square. Provide exact lengths. Describe any problems you have. Side Length Area .
18. Bicycle gears
The toothed wheel on the bicycle pedal has 40 teeth, the wheel on the rear wheel has only 16 teeth. How many times does the rear wheel turn if the pedals rotate 50 times?
19. Warmer weather
This morning it was -6 °C. What temperature did the thermometer show yesterday if it was three times warmer?
20. Surface area of the top
A cylinder is three times as high as it is wide. The length of the cylinder’s diagonal is 20 cm. Find the surface area of the top of the cylinder.

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