Grade 7 Topic 1A Review (2021)

Adding Integers

100

28 + (-45)=

What is -17?

200

(-99) + (-11)=

What is -110?

300

20 + 3 + (-6)=

What is 17?

400

(-4) + 5 + (-9)=

What is -8?

500

7 + (-20) + (-3)=

What is -16?

Subtracting Integers

100

13 - 37=

What is -24?

200

15 - (-25)=

What is 40?

300

-12 - 55=

What is -67?

400

5 - 10 - 3=

What is -8?

500

-6 - (-10) - 2=

What is 2?

Adding Rational Numbers

100

1 4/5 + (-1/3)

1 7/15

200

-7.1 + 3.63

-3.47

300

-3 3/4 + 10 7/8

7 1/8

400

-4.3 + 14.5

10.2

500

5 13/64 + (3/16)+1 1/8

6 33/64

Subtracting Rational Numbers

100

-4/15 - 7/25

-41/75

200

17.9 - (-19.4)

37.3

300

3 1/2 - (-2 1/3)

5 5/6

400

-18.278 - (-6.8)

-11.478

500

-3/5 - 1 2/15 -7/10

-2 13/30

Integers and Their Opposites

100

A diver is 19 meters below below the surface of the water.  Use an integer to represent how far the diver will need to travel to reach the surface.

19

200

An elevator goes up 7 floors and then down 4 floors.  What integer represents the change in the floor level?

11

300

Sean is exploring a coral reef 91 feet below sea level and Liz is hiking 91 feet above sea level.  Who is father away from sea level?

They are the same distance from sea level.

400

A submarine is underwater.  Its position is 645 feet below sea level.  It rises in the water 100 feet and then descends 100 feet.  What integer represents the change in the submarine's position in the water?

zero

500

Which situation can be represented by the opposite of -7?

a.  You take an elevator down 7 floors.

b.  You take an elevator up 7 floors.

c.  The temperature drops 7 degrees.

d.  A stock decreases 7 points.

b