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Fractions<br />
6. Ask what was done to the 4 (denominator) to make 12 It was multiplied<br />
by 3, so multiply the numerator by 3. (1 x 3 = 3)<br />
7. Ask what was done to the 6 (denominator) to make 12 It was multiplied<br />
by 2, so multiply the numerator by 2. (5 x 2 = 10)<br />
8. The fractions are changed to and . We can now add or subtract them.<br />
Adding and Subtracting Unlike Fractions<br />
To add or subtract unlike fractions, rename them with the same denominator.<br />
Follow these steps:<br />
1. List the multiples for each denominator and find the least common<br />
denominator.<br />
2. Rename the denominators and multiply the numerators.<br />
3. Add or subtract the fractions and then the whole numbers.<br />
4. Write the answer in the simplest form.<br />
Adding:<br />
Try this one:<br />
1. Multiples of 2 = 2, 4, 8, 12, 16, 20, 24, 28, 32, 3…<br />
2. Multiples of 8 = 8, 16, 24, 32, 40, 48…<br />
3. Least common multiple is 8<br />
4. Multiply by to get a denominator of 8.<br />
42 42<br />
<strong>Simply</strong> <strong>Math</strong> Workbook
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