Adding and Subtracting Rational Numbers

Adding Integers

10

-6  +  9

3

20

-52  +  (-142)

-194

30

16  +  (-23)

-7

40

-23 + 17 + (-14)

-20

50

(-8) + 14 + (-27) + 6

-15

Subtracting Integers

10

10  -  12

-2

20

What is the distance from 8 to -12?

20

30

-7 - 17

-24

40

-23 - (-43) - 11

9

50

-12  -  (-8)  -  (-3)  -  14

-15

Adding and Subtracting Fractions and Mixed Numbers

10

In order to add or subtract fractions, we need to have this first.  (We can't just add halves and eighths for instance.)

What are COMMON DENOMINATORS?

20

-²/₅ - (-³/₄)

⁷/₂₀

30

⁵/₈ - ⁴/₅

-⁷/₄₀

40

5 7/8 + (-1/2)

5 3/8?

50

-2 1/3 - 4 5/6

-7 1/6

Adding and Subtracting Decimals

10

Before we begin to add or subtract decimals, we need to make sure to do this.

What is LINE the DECIMALS UP?

20

-3.2 + (-6.15)

-9.35

30

-8.5  -  (-1.23)

-7.27

40

-12.5 - 8.32 - (-11.14)

-9.68

50

9.4 - 23.51 + (-8.17) - (-4.687)

-17.593