Integer Operations Lesson

Integer Operations

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

Multiple Choice

Which operation cannot be performed first?
6² + (-1 - 8) + 5 - 7(3 - 4)

• 6²
• -1 - 8
• 5 - 7
• 3 - 4

Adding Integers

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

Adding Two Negative Numbers

• Add them and keep the sign

Multiple Choice

What is-3 + (-10)

• 13

• -13

• 7

• -7

Adding Integers with DIFFERENT SIGNS

• Subtract them

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

Multiple Choice

Solve -13 + 3

• -10

• 10

• 16

• -16

Subtracting Integers

• Keep, Change, Change

  OR

• Add the Opposite

Open Ended

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

Open Ended

Solve -7 - 8

Multiple Choice

-9 - (-2) Which of the following is correct?

• 9 + 2

• -9 + 2

• -9 + (-2)

Multiple Choice

A football team gained 7 yards on the first play, lost 14 yards on the second play, and gained 11 yards on the third play. How many yards have they moved from their starting spot?

• +4 yards

• —4 yards

• +32 yards

• +18 yards

Multiplying and Dividing Integers

• Same Signs= Positive Answer

• Different Signs= Negative Answer

Multiple Select

Select ALL of the answers that are NEGATIVE

• -5 x 6

• -21/-3

• 8 x (-12)

• -4/2

Mixed Practice

Remember your integer rules!

Multiple Choice

On Monday the temperature was -5 degrees in the morning. The temperature rose 14 degrees throughout the day. What was the final temperature?

• 9

• 19

• —19

• —9

Multiple Choice

-5 + 6 - (-9) - 1

• -9
• 1
• 9
• 2

Multiple Choice

Jose pays 7 payments of $5 each to a game store.  He returns one game and receives $20 back.  What is the change to the amount of money he has?

• 55
• -15
• -55
• 32

Multiple Choice

$$-2\times3^2-\left(-5\right)$$  

• 23

• -7

• -23

• -13

Multiple Choice

$$\frac{-3+4\left(-4\right)^2-61}{-5-8}$$  

• 0

• undefined

• 0/-13

• 61

Multiple Choice

Flora made 3 withdrawals of $75 each from her bank account.
What was the overall change in her account?

• —$225

• $225
• —$25

• $25