Adding, Subtracting, and Multiplying Negative Numbers

Review - Fun with Negative Numbers and other wacky things

Adding / Subtracting Negatives

Same signs add - Different signs subtract

• If two numbers are negative, add them and the answer is negative

  • -9 -9 = -18

• If answers are negative and positive, subtract them and them and keep the sign of the larger number

  • -7 + 9 = 2 or 7 - 9 = -2​

Multiple Choice

Which number is greatest?

• -1
• -4
• -6

Multiple Choice

Which number is closest to 0 on a number line?

• -10
• -14
• -15

Multiple Choice

-3 + (-2)

• -5
• 5
• 1
• -1

Multiple Choice

-6 + 7

• 1
• -1
• 13
• -13

Multiple Choice

18 + (-13)

• 5
• -5
• 21
• -21

Multiple Choice

-7 + (-8)

• -15
• 15
• 1
• -1

Multiple Choice

3 + (-5)

• -2
• 2
• 8
• -8

Multiple Choice

-11 + 15

• 4
• -4
• 26
• -26

Multiple Choice

3 + (-9)

• -6
• 6
• 12
• -12

A negative times a positive is a negative

​

-9 * 9 = -81​

Negative * Positive

A Negative times a negative is a positive

​

-9 * -9 = 81​

Negative * Negative

Multiplying Negative Numbers

Some text here about the topic of discussion

Multiple Choice

-2 * 3

• -6

• 6

• -5

• 5

Multiple Choice

-4 * -5

• -20

• 20

• 10

• 9

Multiple Choice

6 * -3

• 12

• 18

• -12

• -18

Multiple Choice

-9 * -7

• 63

• 62

• -62

• -63

Multiple Choice

-10 * -8

• 18

• -18

• -80

• 80

Multiple Choice

7 * -5

• 35

• 40

• -35

• -40

Multiple Choice

-3 * 12

• 36

• -36

• 24

• -24

Multiple Choice

-2 * 11

• 22

• 33

• -33

• -22

Distribution

*The operation is multiplication ​

9 (x - 9)

​

9*x - 9*9​

​

9x - 81​

Some text here about the topic of discussion

Multiple Choice

3(2c - 5)

• 6c - 15
• 6c + 15
• 6c + 15
• -6c - 15

Multiple Choice

(x - 6)4

• 24 - 4x
• 4x - 6
• x - 24
• 4x - 24

Multiple Choice

5(a + 6)

• 5a + 6
• a + 30
• 5a + 30
• 5a - 30

Multiple Choice

Simplify the expression:
3(4 + 7y)

• 12 + 21y
• 13 + 21y
• 14 + 21y
• 16 + 21y

Funky - Functions

​Some text here about the topic of discussion.

Multiple Choice

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Multiple Choice

Is this mapping a function or not a function? 

• Function
• Not a Function

Multiple Choice

Is this table a function or not a function? 

• Function
• Not a Function

Multiple Choice

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Multiple Choice

Which equation best represents the relationship between x and y in the table shown?

• y= 5x+5
• y=1/5x+5
• y=15x+5
• y=10x+5

Multiple Choice

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Multiple Choice

If my function rule is x + 3, what is the OUTPUT if the input is 4?

• 4
• 3
• 7
• 10

Multiple Choice

If my function rule is 4x, what is the OUTPUT if the input is 5?

• 45
• 54
• 9
• 20

Multiple Choice

If my function rule is x÷3, what is the OUTPUT if the input is 12?

• 9

• 4

• 3

• 36

Multiple Choice

y=x-6
What is the missing number?

• 12
• 10
• 14
• 13

Solve for x

​Remember, do the opposite.

Multiple Choice

What is the solution for x + 9 = 21

• 10
• 12
• 11
• 13

Multiple Choice

Solve for b
2b = -16

• 8
• 4
• -8
• 3

Multiple Choice

• x = 20
• x = 7
• x = 10
• x = 3

Multiple Choice

x - 8 = -5 

• 13
• -13
• 3
• -3

Multiple Choice

m+13=21

• m=34
• m=8
• m=273
• m=6

Multiple Choice

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10
• v + 4 = 10
• 10 - 4 = v
• Answer not Given

Multiple Choice

Martha baked cupcakes for 3 different classes. If each class needs 24 cupcakes which equation could be used to find x, the total number of cupcakes Martha will bake?

• 3x=24
• x/3=24
• 24x =3
• x/24 =3