Adding and Subtracting Integers Review

Vocab

100

Positive Number

Numbers greater than 0

200

Negative Number

Numbers less than 0.

300

Integer

The set of whole numbers and their opposites.

400

6 and -6 What can we call these two integers?

Opposites

500

|-6| What is this question asking and what is the answer?

Absolute value of -6 = 6

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

How do you find the sum of numbers with the same sign?

Add and keep the sign.

500

-16+18+-17

-15

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-27 - (-3)

-24

500

-10 - 11 - (-3)

-18

Mix

100

-2 - 3

-5

200

-10 + 30

20

300

21 - (+5)

16

400

Subtracting a negative is the same thing as...

Adding a positive

500

-10 + (-2) - 5

-17

Rational Numbers

100

1/3 + 1/6

3/6 = 1/2

200

1/3 - 1/6

1/6

300

1/5 - (-1/15)

4/15

400

2/5 + - 1/10

2/10 = 1/5

500

-8/9 - (-1/3)

-5/9