Mixed numbers may be changed to improper fractions by:

a. Multiplying the whole number by the denominator of the fraction.

b. To this answer, adding the numerator of the fraction.

c.

Placing this sum (or answer) over the denominator of the fraction.

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STEPS: (1) 4 (whole number) x 3 (denominator) = 12

4 2 = 12

3

(2) 12 (answer from ABOVE) + 2 (numerator) = 14

4 2 = 12 + 2 = 14

3

(3) 14 is placed over denominator = 14

3

Thus 4 2 = 12 + 2 = 14

3

3

3

a. When you add and subtract fractions, the denominators of these fractions

must be the same. To make the denominators of two fractions the same, you have to

find the smallest denominator into which each of the original denominators will divide

evenly. This is the lowest common denominator.

2

5

asked to find the lowest common denominator.

What is the smallest number into which 2 and 5

will divide evenly?

The answer is 10. 10 is the lowest common

denominator.

MD0904

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