Adding and Subtracting Rational Numbers

Adding 1

100

6.5 + (-4.2)

2.3

200

5/6 + (-1/6). Simplify

2/3

300

-4.9 + 3.2

-1.7

400

0.5 + (-3/10)

0.2 or 1/5

500

-3/5 + 1.4

0.8 or 4/5

Adding 2

100

Find the sum. (7/11)+(−1/11)

6/11

200

Find the value of the expression 6.9+(−2.6).

4.3

300

Add. −9.3+(−6.5)

-15.8

400

-4 1/2 + 9 3/4

5 1/4

500

Simplify the expression. (-2/3)+(1/9)

-5/9

Subtracting 1

100

Positive, negative, or zero? 3.7−(−9.9)

Positive

200

1/9 - (-4/9)

5/9

300

-1.8 - 2.1

-3.9

400

1/2 - 5/6

-1/3

500

-3/4 - 0.25

-1

Subtracting 2

100

Positive, negative, or zero? 3.7 −9.9 

Negative

200

5.4-(-1.5)

6.9

300

Find (−1/3)−(-5/6)

1/2

400

Subtract. -1/2 - (-0.4)

-0.1 or -1/10

500

0.2 - (4/5)

-3/5 or -0.6