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Adding and Subtracting Like Fractions

- Lesson 5.1

Terminology

Like decimals, fractions represents parts of

numbers. A fraction is usually a number that is

between 0 and 1.

Numerator - number on top

Denominator - number on bottom

To add or subtract fractions with like

denominators

- If the denominators are already the same, then

youre ready to add or subtract. - Add or subtract the numerators. Keep the

denominators the same. - Simplify (reduce) the fraction, if possible.
- If you end up with an improper fraction, change

it to a mixed number.

Examples

1

2

3

5

5

5

This answer cannot be reduced any further.

9

4

5

2

2

14

14

14

7

The GCF of 4 and 14 is 2, so we divide by 2 to

reduce.

8

3

11

9

9

9

This is an improper fraction (the top is bigger

than the bottom), so we want to change it to a

mixed number.

To do this, divide the bottom into the top.

1

Answer

1

2

9

11

9

9

2

Try Some

7

5

1

6

12

12

4

1

5

7

7

7

1

12

1

8

15

3

15

Homework Time!

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