Adding and Subtracting Integers

Vocab

100

Whole Numbers

Regular, natural numbers, no fractions, decimals or negative numbers.

200

Integer

The set of whole numbers and their opposites.

Just numbers that are negative & positive. 

300

Same Sign 

Add the numbers & keep the sign. 

400

When adding integers with different signs what do you do? 

Subtract the numbers & take the sign of the largest number. 

500

Is zero a whole number?

Yes. 

Adding Integers

100

-7 + 12

5

200

-10 + 5

-5

300

-10 + (-12)

-22

400

How do you find the sum of numbers with different signs

Subtract and take the sign of the bigger number

500

-16+18+-1

1

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-27 - (-3)

-24

500

-10 - 16 - (-2)

-24

Mix

100

-8 - 15

-23

200

-10 + 26

16

300

21 - (+5)

16

400

Subtracting a negative is the same thing as...

Adding a positive

500

-10 + (-2) - 5

-17