Add and Subtract Integers

Adding integers with the same sign:

• Subtract and take the sign of the BIGGER number

• Add and keep the sign.

• Add and ignore the sign.

Adding integers with different signs

• Subtract and take the sign of the BIGGER number

• Subtract and keep the number of the smaller signs.

• Adding and keep the sign.

5 - (-9) =

• -4
• -9
• 4
• 14

-3 + (-2)

• -5
• 5
• 1
• -1

-18 + 12

• -6
• 6
• 20
• -30

10 - 18

• 28

• 8

• 12

• -8

8 - 12- (-6) =

• 2

• -2

• 18

• -18

Solve the expression. 5 - (-9)

• -4

• 4

• 14

Solve the expression. -3 + (-2)

• -5

• -1

• 5