You must now change your fractions to tenths.

1 = 1x5 = 5

1 = 1x2 = 2

2 2x5 10

5 5x2 10

b. To add fractions, find the lowest common denominator and change the

fractions to fractions having the same denominator. Then add the numerators.

3 4

Change fractions to the lowest common denominator.

Then add the numerators.

1= 4

3 12

3= 9

4 12

4 + 9 = 13 or 1 1

12 12 12

12

c. To subtract fractions, again find the lowest common denominator and change

the fractions to fractions having the same denominator. Then, subtract the second

numerator from the first numerator.

4 3

3

9

=

4 12

1=4

3 12

9 - 4 = 9-4 = 5

12 12 12 12

Two fractions may be multiplied by:

a. Multiplying the numerators.

MD0904

1-18

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