Unit 1 Review

Integer Instincts

100

-8 + 13

5

200

17 - (-9)

26

300

-24 + 17 - 9

−16

400

-31 - (-18) + 7

−6

500

-46 + 28 - (-17) - 12

−13

Rational Numbers

100

-2.5 + 4.1

1.6

200

3/4 + (-1/2)

1/4

300

-3.6 - (-2.25)

-1.35

400

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

−1 1/6

500

-2 3/4 + 1 5/6

−11/12

What’s the Change?

100

From -4 to 7

11

200

From -12 to 15

27

300

From -8.5 to 6.25

14.75

400

From -17.25 to 12.5

29.75

500

Start -21.5, end 14.75. Find change.

36.25

Real-World Math

100

8 ft below sea level = ?

−8 ft

200

Lose $14, then gain $9. Net change?

−$5

300

Start at -18 ft, climb 31 ft. End?

13 ft

400

-12.5°C, rises 8.75°, falls 4.5°. End?

−8.25°C

500

Diver starts -18 m, rises ?, descends 7 m, ends -9 m. Find the rise.

16 m

Mystery Number

100

6 + x = 0

−6

200

-11 + x = 0

11

300

5.8 + (-3.2) + x = 0

−2.6

400

-4.6 + 7.1 + x = 0

−2.5

500

8.25 + (-11.7) + 2.4 + x = 0

1.05