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# Adding Fractions - PowerPoint PPT Presentation

Adding Fractions. Adding Like Fractions. 1. Add numerators 2. keep denominators the same 3. Reduce or make mixed number. Try Some!. = 6 7. +. 1 5. ÷ 2 ÷ 2. 2. 9 3 10 10. = 12 10. = 6 5. 1. +. 1 2. = 12 8. ÷ 4 ÷ 4. = 3 2.

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### Adding Fractions

Adding Like Fractions

1. Add numerators

2. keep denominators the same

3. Reduce or make mixed number

= 6

7

+

1

5

÷ 2

• ÷ 2

• 2. 93

10 10

= 12

10

= 6

5

1

+

1

2

= 12

8

÷ 4

• ÷ 4

= 3

2

1

• 3. 66

8 8

+

1. 42

7 7

Adding unlike fractions

1. find common denominator (stack)

2. make new fractions

3. add new numerators

4. keep denominator the same

5. Reduce or make into mixed number

2. 23

3 4

+

+

4

7

2

14

2

3

3

4

8

14

2

14

8

12

9

12

x 2 x 2

x 4 x 4

=

=

x 3 x 3

+

=

+

=

5

7

5

12

10

14

17

12

1

÷ 2 ÷ 2

1. 42

7 14

Adding fractions & mixed numbers

1. find common denominator (stack)

2. make new fractions

3. add new numerators

4. keep denominator the same

5. add whole number to fraction

6. Reduce or make into mixed number

4

2. 31

4 6

3

+

+

3

4

1

6

3

2

3

1

6

9

12

2

12

3

4

6

1

6

x 3x 3

x 2 x 2

=

=

4

+

4

x 2x 2

+

=

=

11

12

5

6

4

3

1. 21

3 6

Adding Mixed Numbers

1. Stack fractions and Add whole numbers

2. find common denominator if necessary

3. make new fractions

4. add fractions

5. Reduce or make into mixed number

1

4

2. 31

4 6

3

2

+

+

1

2

3

1

5

3

2

3

1

6

10

15

3

15

3

4

6

1

6

x 5x 5

1

x 2 x 2

=

=

4

2

2

4

x 3x 3

=

+

=

+

13

15

5

5

5

6

1. 21

3 6