Chapter 1 Review

Absolute Value & Comparing Numbers

100

| 3 |

3

200

| -5.2 |

5.2

300

-| -3.75 |

-3.75

400

Order |2.25|, |-1.5|, 1.25, |2.5|, and -2 from least to greatest.

-2, 1.25, |-1.5|, |2.25|, |2.5|

500

Your friend is in Death Valley, California, at an elevation of -282 feet. You are near the Mississippi River in Illinois at an elevation of 279 feet. Who is closer to sea level?

You are, because |279| < |-282|.

Adding Integers

100

-16 + (-11)

-27

200

-15 + 5

-10

300

100 + (-75)

25

400

-2 + (-7) + 15

6

500

9 + (-14) + 3

-2

Adding Rational Numbers

100

-1.6 + (-2.4)

-4

200

9/10 + (-4/5)

1/10

300

-4 5/9 + 8/9

-3 2/3

400

-4 + 6.4 + (-2.7)

-0.3

500

6 + 4 3/4 + (-2.5)

8.25

Subtracting Integers

100

18 - 7

11

200

-16 - (-5)

-11

300

8 - 18

-10

400

-1.75 - (-8.25) - 2.50

4

500

In one month, you earn $16 for mowing the lawn, $15 for babysitting, and $20 for allowance. You spend $12 at the movie theater. How much more money do you need to buy a $45 video game?

$6

Subtracting Rational Numbers

100

3.8 - (-7.45)

11.25

200

-3.71 - (-2.59)

1.12

300

3 3/4 - 7/8

2 7/8

400

-5/12 - 3/10

-43/60

500

A turtle is 20 5/6 inches below the surface of a pond. It dives to a depth of 32 1/4 inches. What is the change in the turtle's position?

-11 5/12 inches