Adding Integers

Adding Integers

Lesson

Adding Integers with the SAME sign

If the signs are the same, keep the sign and add.

Two Positives = Positive Answer

Two Negatives = Negative Answer

Multiple Choice

12 + 15

• 3

• 25

• 27

• 22

Multiple Choice

-8 + (-20)

• -28

• 28

• 14

• 12

Adding Integers with DIFFERENT signs

Subtract (the absolute value), keep the sign of the higher number

If there are more positives, the answer is positive.

If there are more negatives, the answer is negative.

Multiple Choice

-16 + 8

• -8

• 8

• -24

• 24

Multiple Choice

10 + (-4) = ?

• -6
• 6
• 14
• -14

Multiple Choice

-10 + 10

• 20
• 0
• -20
• 1,000,000

Multiple Choice

5 + (-13)

• 8

• 7

• -7

• -8

A great way to help you remember this is using SADS

Same, Add, Different, Subtract

Now it's your turn to practice!

Multiple Choice

-18 + 23

• 41

• -41

• 5

• -5

Multiple Choice

-9 + (-13)

• 4

• -4

• -22

• 22

Multiple Choice

-2 + 4 

• -2
• 2
• 0
• -4

Multiple Choice

-17 + 18

• -25

• -1

• 1

• 25

Multiple Choice

11 + (-19)

• -8

• 30

• 8

• -30