# Number System Review (Grade 7)

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## Number System Review

1.

What is the value of [math]-4.85-(-6.32)[/math]?

- [math]-11.17[/math]
- [math]-1.47[/math]
- [math]1.47[/math]
- [math]11.17[/math]

2.

What number should be placed in the square to make the equation true?

[math]3 1/2 - 4 1/4 = 3 1/2 + square[/math]

[math]3 1/2 - 4 1/4 = 3 1/2 + square[/math]

- [math]-4 1/4[/math]
- [math]4 1/4[/math]
- [math]- 3/4[/math]
- [math]3/4[/math]

3.

Which of the following is an example of the Associative Property of Multiplication?

- (2 + 4) + 5 = 2 + (4 + 5)
- (3 x 4) x 5 = 3 x (4 x 5)
- 52 x 4 = 4 x 52
- 3 + 92 = 95

4.

Which equation below shows a correct use of the distributive property?

- 2(3 + 5) = (2 + 3) x (2 + 5)
- 2(3 + 5) = (2 x 3) + 5
- 2(3 + 5) = 2(5 + 3)
- 2(3 + 5) = (2 x 3) + (2 x 5)

5.

A pitcher contains [math]3 1/2[/math] quarts of milk. You pour [math]1 7/8[/math] quarts into a smaller pitcher. How many quarts of milk are left in the first pitcher?

- [math]1 3/4[/math] quarts
- [math]1 5/8[/math] quarts
- [math]2 5/8[/math] quarts
- [math]2 3/4[/math] quarts

6.

The air temperature in the North Pole in the morning was 3 degrees Celsius. By 10:00 am the temperature dropped 12 degrees. By noon the temperature had gone up 5 degrees. At 3:00 pm the temperature went up 9 degrees. By nightfall the temperature had dropped 16 more degrees. What was the temperature at the North Pole at nightfall?

- 11
- 0
- -11
- -9

7.

Hilton Head Island is about 12 miles long. Susan has a map that shows the island. If the scale on the map is 1 inch = [math]1/2[/math]mile, what is the length of the island on Susan's map?

- 6 inches
- 12 inches
- 18 inches
- 24 inches

8.

[math]7/20[/math] is equivalent to which decimal?

- 0.35
- 0.720
- 0.30
- 0.72

9.

Graph on a number line and solve.

(-4) + 8 =

(-4) + 8 =

10.

When working with positive and negative numbers, the further left you move on the number line, the the numbers are and the further right you move on the number line, the the numbers are.

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