General Rules
Multiplying/Dividing Decimals
Multiplying Fractions
Dividing Fractions
Converting Fractions/Decimals/Percents
100

(+) x (+) =

(+) or positive

100

-4.95 ÷ 1.5

-3.3

100

3 9/10*(-2 2/3)

-10 2/5

100

-1 5/6-:4 1/6

-11/25

100

Convert 53% to a decimal and fraction.

0.53 and 

53/100


200

(+) x (-) =

-

200

-9.4 x (-4.7)

44.18

200

5/8*(-4/15)

-1/6

200

-4/11-:2/7

-1 3/11

200

Convert 4/5 to a decimal and percent

0.8 and 80%

300

Tell whether the expression is positive or negative without evaluating.

-3/10 * (-8/15)


positive

300

-15.4 ÷ (-2.5)

6.16

300

-2 3/8*(-1 3/5)

3 4/5

300

9/10-:(-1 1/5)

-3/4

300

Convert 0.45 to a percent and fraction (simplify!)

45% and 

9/20

400

How is multiplying and dividing rational numbers similar to multiplying and dividing integers?

The same rules for signs of integers are applied to rational numbers.

400

-98.14 x (-21.3)

2,090.382

400


-5/8*1/2


-5/16

400

-4 1/6-:1 1/3

-3 1/8

400

Convert 15% to a decimal and fraction

0.15 and 

3/20

500

Tell whether the expression is positive or negative without evaluating.

-6/5-:(-1/2)*6.3*(-0.6)-:2/3*7 7/8-:100


negative

500

24.75 ÷ 2.75

9

500

-3/5*2 2/7(-3 3/4)

5 1/7

500

7/10÷(-5/2)

-7/25

500

Convert 175% to a decimal and fraction

1.75 and 

1 3/4