Adding and Subtracting Integers

Bob had a balance of -$500 in his bank account. He deposited $500 in his account, what is Bob’s new balance?

• $12

• $100

• $0

• $1

Solve.

-12 + (-5) =

• 7

• 17

• -17

• 10

What is (-8) + 8 ?

• 24

• 16

• 0

• 4

Solve

-3 + -2

• 5

• 6

• -6

• -5

When you add opposites, what do you get?

• 0

• A negative number

• Attraction

• You cannot add opposites

Integer rules:​ When adding integers with the same sign you  ______ them and keep the sign.​

• add

• subtract

• multiply

• divide

Integer rules:​ ​When adding integers with different signs you  ________ them and keep the sign of the bigger number.​

• add

• subtract

• multiply

• divide

Integer rules:​ To make subtracting integers easier, you can change all subtraction problems to _______ problems by adding the opposite.

• addition

• subtraction

• multiplication

• division

- 1.5 - (-3.9) =

• -2.4

• 2.4

• 5.4

• -5.4

Are the following expressions equivalent?

• yes

• no