Understand Integers and Rational Numbers

Numbers are cool.

100

Tell the opposite of the integer -9.

9

200

Tell the opposite of the integer 25.

-25

300

What are the steps to subtracting integers?

Keep, Change, Change to Opposite Sign

400

42 - (-80) =

122

500

-50 - 40 =

-90

Back to Kindergarten

100

9 + 7 =

16

200

-3 + (-15) =

-18

300

-19 + 17 =

-2

400

20 - (-12) =

32

500

-12 - 23 =

-35

Let's take a trip to Chipotle

100

(4)(5) =

20

200

-16/4 =

-4

300

63/-7 =

-9

400

(-8)(-8) =

64

500

-30/-6 =

5

Counting my steps

100

|-40| = ?

40

200

-|-200| = ?

-200

300

The highest point on a tree is 40 feet above the ground.  Its roots reach 18 feet below the ground.  Find the distance from the top of the tree to its roots.

|40| + |-18| = 40 + 18 = 58 feet

400

The absolute value of any number is ALWAYS...?????

POSITIVE

500

Find the absolute value of each and then order them from least to greatest.

|-130|, |101|, |-11|, |-119|, |1,234|, |-1,300|

130, 101, 11, 119, 1,234, 1,300 --> 11, 101, 119, 130, 1,234, 1,300

Welcome to Math Class!

100

|7 + 8| =

15

200

|-37 + 13| =

24

300

-9 + |4 -7| =

-6

400

|-29 + (-22)| - 1 =

50

500

|-42/7| x 9 =

54