Adding and Subtracting Rational Numbers REview

Front

-23.4 - 3.4 =

Back

-26.8

Front

-40 + 15.05 =

Back

-24.95

Front

18 - 23.2

Back

-5.2

Front

5/8 − (− 7/8)

Back

1 1/2

Front

Solve 1/2 + (-3/4)

Back

-1/4

Front

7/10 - 9/10

Back

-1/5

Front

Temperature on Monday: 3°C. It was 7.5°C lower on Tuesday. What was the temperature on Tuesday?

Back

-4.5°C

Front

Tell whether this sentence is always true, sometimes true, or never true: negative - positive = negative

Back

always true

Front

-6.5 + (-0.5)

Back

-7

Front

When adding rational numbers with the same sign, you must:

• Subtract and keep the sign of the biggest number
• Add together and keep the sign
• Keep, change, switch
• Add the opposite

Back

Add together and keep the sign