Adding and Subtracting Integers

Vocab

100

What does Absolute Value mean?

The distance a number is from zero.

200

What is an Integer?

The set of whole numbers and their opposites.

300

What is an Opposite number?

The opposite of a number is the same distance from zero as the original number just on the other side.

400

What is |-6|?

The absolute value of -6 is 6.

500

How do 6 and -6 relate?

They are opposites.

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

-42 + 4

-38

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

Adding and Subtracting Integers Mix

100

-2 - 3

-5

200

-10 + 30

20

300

21 - 5

16

400

-3 - (-9)

6

500

-10 + (-2) - 5

-17

Adding Rational Numbers

100

–7.7 + –6.9

-14.6

200

-5 1/10 + 1

-4 1/10

300

-1/2 + -3/4

-5/4 or -1 1/4

400

6/10 + -1/5

4/10 or 2/5

500

4.1 + –1.72 

2.38

Subtracting Rational Numbers

100

4.1 − (–1)

5.1

200

-0.1 - (-1.6)

1.5

300

-1 3/10 + 9

7 7/10

400

1/10 + (-1/2)

-4/10 or -2/5

500

–8 − (–5.5)

-2.5