Integer Operations

Integer Operations

Review how to add, subtract, multiply, and divide integers.

Adding Integers

When you add inverses, they always cancel eachother out so you get zero.

Fill in the Blank

What is the inverse of -8?

Fill in the Blank

What is 4 + (-4) =

Adding Two Negative Numbers

• Add them and keep the sign

Multiple Choice

What is-3 + (-10)

• 13

• -13

• 7

• -7

Fill in the Blank

-8 + ? = -14

Fill in the Blank

9 + ? = 0

Adding Integers with DIFFERENT SIGNS

• Subtract them
• Keep the sign of the LARGER NUMBER (absolute value)

Fill in the Blank

-5 + 9 Will this answer be positive or negative?

Fill in the Blank

Which number has the larger absolute value? -12 + 8

Multiple Choice

Solve -13 + 3

• -10

• 10

• 16

• -16

Fill in the Blank

Solve 12 + (-3)

Subtracting Integers

• Keep, Change, Change
• Add the Opposite

Fill in the Blank

5 - (-4) Which number do you keep the same?

Open Ended

5 - (-4) What do you do to the subtraction sign? How would you rewrite this problem?

Open Ended

Solve -7 - 8 after you Keep, Change, Change

Multiple Choice

-9 - (-2) Which of the following is correct after you keep, change, change?

• 9 + 2

• -9 + 2

• -9 + (-2)

Multiplying and Dividing Integers

• Same Signs= Positive Answer
• Different Signs= Negative Answer

Fill in the Blank

-9 x 8 Will the answer be positive or negative?

Multiple Select

Select ALL of the answers that are NEGATIVE

• -5 x 6

• -21/-3

• 8 x (-12)

• -4/2

Fill in the Blank

Solve -8/8