Adding & Subtracting Integers/Rational Numbers

Adding Integers

100

−6 + (−2)

-8

200

5 + (−10)

-5

300

-37 + 14

-23

400

-18 + (-12) + 16

-14

500

−40 + 50 + 75 + (−50)

35

Adding Rational Numbers

100

-1 1/5  +  (-3/5)

-1  4/5

200

12.48 + (−10.636)

1.844

300

-1/2 + 0.25

-1/4 OR -0.25

400

-13.4 + (-2) + 14

-2.2

500

−1.7 + (−4.75) + 1.7 + 0.8 + 3.2

-0.75

Subtracting Integers

100

−2 − 4

-6

200

−8 − (−13)

5

300

−3 − (−7)

4

400

−6 − (−6) - 11

-11

500

−39 + 46 − (−39)

46

Subtracting Rational Numbers

100

-4 1/7 - 5/7

-4 6/7

200

−2.1 − 3.9

-6

300

−8.8 − (−8.8)

0

400

123 - (-42)

165

500

−1 3/8 − 8 1/2 − (−6 7/8)

-3

Miscellaneous

100

∣ −5.6 ∣ − ∣ 2.4 ∣ 

3.2

200

∣ −18.26 ∣

18.26

300

You eat 3/10 of a coconut. Your friend eats 1/5 of the coconut. What fraction of the coconut do you and your friend eat in total?

1/2

400

A scientist records the water temperature and the air temperature in Antarctica. The water temperature is −2∘ C. The air is 9∘ C colder than the water. What is an expression that you can use to represent this scenario?

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