Adding & Subtracting Integers
Adding & Subtracting Decimals
100

What is the rule for adding integers with the same sign

same sign means add the numbers and keep the sign of that number

100

What is the rule for subtracting integers?

Keep

Change

Change

200

(-9)+6-13

-16

200

3.9+(-9.8)-11.5

-17.4

300

15-8+9

16

300

-2.2+(-6.7)-(-14.9)

6

400

-12+(-4)-(-9)

-7

400

3.6+(-3)-10.1

-9.5

500

(-8)-(-9)-14

-13

500

-5.1-2+(-3.6)

-10.7

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