Subtraction of Integers on a Number Line. Directions for adding and subtracting integers on a number...

Subtraction of Integers on a Number Line

Directions for adding and subtracting integers on a number line…

1. Start on the…first number in the expression.

2. To know which way to face on the number line look at the…sign of the second number in the expression.

If it is positive face right because the positives are to the right on the number line.

If it is negative face left because the negatives are to the left on the number line.

3. To move just remember: If you are adding…move forward. If you are subtracting…move backward.

Expression

-1 – (-6)

Start On… Face… Move…

Solution:

Equivalent Expression:

-1 The negatives Backward6 steps

5 -1 + 6

Expression

-2 – 7

Solution:

-2 The positives Backward7 steps

-9 -2 + (-7)

Expression

5 – (-5)

Solution:

5 The negatives Backward5 steps

10 5 + 5

Expression

-8 – (-17)

Solution:

-8 The negatives Backward17 steps

9 -8 + 17

NegativeNumbers

NumbersDecreasing

NumbersIncreasing

PositiveNumbers

Adding a Negative

Adding a Positive

Subtracting a Negative

Subtracting a Positive

Make Connections!

Adding a negative is the same as:_____________________

Adding a positive is the same as:______________________

Subtracting a positive is the same as:__________________

Subtracting a negative is the same as:__________________

Adding a Negative

Subtracting a Negative

Subtracting a Positive

Adding a Positive

Practice using a number line to subtract some integers …think about an equivalent

expressions as you are working!

Subtraction of Integers on a Number Line. Directions for adding and subtracting integers on a number...

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