Integer Review

Integer addition and subtraction

Review

Addition Same sign

• Add the numbers

• Keep the sign

Multiple Choice

-65+ (-34)

• 99

• -99

• 31

• -31

Multiple Choice

48 + 36

• 76

• 78

• 82

• 84

Adding Numbers Different Signs

• Subtract

• Keep the sign of the larger number

Multiple Choice

-56+34

• 90

• 22

• -22

• -90

Multiple Choice

87+ (-45)

• -42

• -132

• 132

• 42

Subtracting Integers

• Keep the First # the same

• Change the subtraction to addition

• Change the sign of the # after the subtraction

Multiple Choice

68-32

• 36

• -36

• 100

• -100

Multiple Choice

97- (-63)

• 34

• 160

• -34

• -160

Multiplication and Division

• Same signs = +

• Different Signs = -

Multiple Choice

(-32)(-4)

• 128

• -128

Multiple Choice

(-25)(5)

• 125

• 150

• -125

• -150