Evaluate Add and Subtract Integers

Which addition expression is equivalent to 7 - (-3)?

• -3 + 7

• -7 + 3

• 7 + 3

• 3 + (-7)

Adding integers with different signs

• Subtract and keep the sign of the BIGGER number!

• Subtract and keep the number of the smaller signs.

• Adding integers is hard!

• Subtract and do not change the signs!

Express an integer: a debt of $50

• 50

• -50

Adding integers with the same sign:

• Subtract

• Add and keep the sign.

• Add and that is it.

• What is adding integers?

Find the sum:
10 + (-5) + 20 = 

• 25

• -25

• -35

• 35

-3 - 2

• -1

• -5

• 1

• 6

Find the sum
(-5) + (-12) = 

• -7

• -17

• 7

• 17

-10 + 4

• -14

• 14

• -6

• 6

-20 + (-11)

• 31

• 9

• -9

• -31

-12 + 9

• 21

• 3

• -3

• -21