Number Line
Adding Rules
Subtacting Rules
Adding Integers
Subtracting Integers
100
The number directly in the middle of the number line
What is 0
100
When you add two positive numbers the answer is always
positive
100

When we subtract same signs what is the rule?

Do what the sign says.
100
9+7
16
100
1-3
-2
200
The number that is the opposite of -10
What is 10
200
When you are adding and both numbers are negative the answer will always be
negative
200

Does the first number, whether negative or positive, ever change when we are subtracting integers?

NO

200

-6+(-5)=

-11

200
-5-7
-12
300
Order these numbers from greatest to least 1, 0, -12, 100, -99
100, 1, 0, -12, -99
300

Write a problem showing a negative plus negative. 

example -5+-5=-10

300

If it is a big minus small problem what kind of answer will you get?

Positive

300
-10+3
-7
300

-14-(-7)=

-7

400
What number is smaller -45 or -34
-45
400

When you are adding different signs what operation will you do?

subtract

400

When it is a small minus big problem what kind of answer will you get?

Negative
400
-3+6
3
400

4-(-16)

20

500
Order these numbers from least to greatest -10, 10, 0, -9, 9
-10, -9, 0, 9, 10
500

When you are adding a negative and a positive number, will the answer be positive or negative?

Which ever number has the greatest absolute value

500

What is the rule for subtracting different signs?

Do the opposite of the sign.

500

-5.3+(-2.4)

-7.7

500

-5-(-1.08)

-6.08

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