(Mrs. Yadgar) Fractions Chapter 9

Fractions in Simplest Form

100

What is 40/80 in simplest form?

1/2

200

What is 12/20 in simplest form?

3/5

300

What is 450/500 in simplest form?

9/10

400

2 12/16

2 3/4

500

What is 40/12 as a mixed number in simplest form?

3 4/12 becomes 3 and 1/3

Add the Fractions

100

Add the fractions:  2/5 +4/5

6/5 = 1 1/5 

200

Add the fractions:  1/4  +  3/4

4/4 = 1

300

Add the mixed numbers:   2 7/12   +    4 4/12

6  11/12

400

Add the fractions: 2 4/15  +  3/15

2 7/15 

500

Add the mixed numbers.  8 12/15  +  4 3/15

12 15/15, which becomes 13

Subtract the Fractions

100

Subtract the fractions:   3/10  -  2/10

1/10

200

Subtract the fractions:  9/12  -  6/12

3/12

300

Subtract the fractions:  5 - 2/3

4 1/3

400

Subtract the mixed number fractions:  8 5/6 - 3 2/6

Simplify your answer

2 3/6 = 2 1/2

500

Subtract the mixed number fractions: 12  -  3/12

Simplify your answer

11 9/12

11 3/4

Adding and Subtracting with Regrouping Mixed Numbers

100

2 3/5 + 1 3/5 

4 1/5

200

5 6/7 - 3 3/7 

2 3/7

300

5 1/4 + 2 3/4

8

400

3 2/7 -1 5/7

3/7

Decompose

100

2/10

1/5+1/5

200

7/10

3/10+4/10

2/10+5/10

1/10+6/10

300

1 2/3

3/3+1/3+1/3

400

2 4/8

8/8+8/8+2/8+2/8

2+2/8+2/8

500

5 1/5

5/5 + 5/5 + 5/5 + 5/5 + 5/5 + 1/5

2 3/5 + 2 3/5

8/5 + 8/5