Adding and Subtracting Integers

Vocab

100

Absolute Value

The distance of a number from zero

200

Integer

The set of whole numbers and their opposites.

300

Describe the Opposite of a number?

The opposite of a number is the same distance from zero as the original number just on the other side.

400

|-6|

Absolute value of -6 = 6

500

6 and -6

Opposites

600

What group of numbers are ½, -9, 0.089?

Rational numbers

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

How do you find the sum of numbers with different signs

Subtract and take the sign of the bigger number

500

-16+18+-17

-15

600

4 ½ + 5 ⅓ 

9 and 5/6

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-27 - (-3)

-24

500

-10 - 11 - (-3)

-18

600

-7¼ -2 + (-1¾)

11

Mix

100

-2½ - 3

-5½

200

-10 + 30

20

300

21 - (+5)

16

400

Subtracting a negative is the same thing as...

Adding a positive

500

-10 + (-2) - 5

-17

600

same signs ______ & ________

different signs _____________ 

Keep the sign of the __________ number, then you'll be exact!

keep & Add

Subtract

Bigger