(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 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 

500

27 2/9 -12 8/9

14 1/3

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