Adding and Subtracting Integers

-6 − 2

• 8

• -4

• 4

• -8

-5 − (-7)

• -12

• 12

• 2

• -2

-4 − (-2)

can be rewritten as:

• -4 + 2

• -4 - 2

• 4 + 2

• 4 - 2

What are the rules for subtracting integers?

• Change to multiplication and use the opposite of the second number.
• Change subtraction sign to addition and use the opposite of the second number.
• Find the opposite of both numbers and then add. 
• Subtract like normal and keep the larger sign. 

-10 + 10

• 20
• 0
• -20
• 1,000,000

If you are adding 2 negative numbers, will your answer be positive or negative?

• negative
• positive

 -2 - (-8)

• 6
• -6
• -10
• 10

-7 + -6

• -1
• 11
• 1
• -13

(-12) + (-8)

• 4

• -20

• 20

(-10) + 30

• -20

• 20

• 40