Positive and Negative Integers/Additive Inverse

Additive Inverse & Adding/Subtracting Integers

Objectives

• I can identify integers and their additive inverse

• I can subtract integers with the same sign and different signs

• I will explain that the sum of an integer and it's additive inverse are zero

Multiple Choice

Additive inverse means...

• same

• opposite

• nothing

Multiple Choice

What is the additive inverse of -1?

• 0

• 1

• 10

• -2

Multiple Choice

What is the additive inverse of 25?

• 0

• 250

• -25

• 26

Multiple Choice

What is the additive inverse of -18?

• 0

• 18

• 1

• -17

Multiple Choice

-2 + 2 = ?

• -1

• 0

• 1

• 2

REMEMBER: The sum of an integer and it's additive inverse is always zero.

Multiple Choice

What is the sum of 13 + (-13) ?

• -1

• 0

• 1

• 2

Fill in the Blank

108 + (-108) = ?

Let's review the addition and subtraction of integers.

Multiple Choice

Negative + Negative = ???

• Positive

• Negative

Multiple Choice

Positive + Positive = ???

• Positive

• Negative

Addition rules:

• The sum of two positive numbers will always be positive.

• The sum of two negative numbers will always be negative.

Multiple Choice

Will the sum of -6 + (-7) be positive or negative?

• positive

• negative

Multiple Choice

Will the sum of 14 + 5 be positive or negative?

• positive

• negative

Review our subtraction rules, then let's practice some math!

Multiple Choice

Subtracting is the same as adding the __________.

• same number

• opposite

• zero

• negative

Multiple Choice

-4 - (-7) = ?

• -4 + (-7)

• 4 + 7

• -4 + 7

Multiple Choice

5 - 3 = ?

• -5 + 3

• 5 + (-3)

• -5 + (-3)

Multiple Choice

14 - (-26) = ?

• 14 + 26

• -14 + (-26)

• 14 + (-26)

Finding the distance between two numbers on a number line.

Multiple Choice

Find the distance between -3 and 2.

• 4

• 5

• 6

• 7

Multiple Choice

Find the distance between 6 and -5.

• 11

• 12

• 13

• 14

Multiple Choice

Find the distance between -1 and 7.

• 6

• 7

• 8

• 9