Chapter 3 Mid Review

Multiplying Fractions of Whole Numbers (Book Method)

100

What is 3/4  of 16?

3x16=48

48/4 = 12

200

What is  5/6 of 12? 

5 x 12 = 60

60 / 6 = 10

300

What is  5/2 of 3?

5 x 3 = 15

15/ 2 = 7 1/2

400

What is  5/9 of 20?

20 x 5 = 100

100 / 9 = 11 R 1

11 1/9

500

What is 

7/4 of 22?

22 x 7 = 154

154 / 4 = 38 R 2

= 38 2/4 = 38 1/2

Multiplying Fractions of Whole Numbers (Raina Method)

100

What is  4/5 of 20?

20/5 = 4

4x4 = 16

200

What is  4/7 of 35? 

35 / 7 = 5

5 x 4 = 20

300

What is  2/3 of 33?

33 / 3 = 11

11 x 2 = 22

400

What is  11/8  of 48?

48 / 8 = 6

6 x 11 = 66

500

What is

4/12 of 48?

48 / 12 = 4

4 x 4 = 16

Multiplying Proper Fractions (Method 1)

100

 1/2 x 3/4 = ? 

 1 x 3 = 3

2 x 4 = 8

= 

3/8

200

 3/5 x 1/2 = ? 

3 x 1 = 3

5 x 2 = 10

= 3/10

300

3/4 x2/3 = ?

3 x 2 = 6

4 x 3 = 12

= 6/12 = 1/2

400

2/6 of 4/5 = ?

2 x 4 = 8

6 x 5 = 30

= 8/30 = 4/15

500

3/4 x (1/5 x 2/6) = ?

2 x 1 = 2

5 x 6 = 30

= 2/30 = 1/15

1/15 x 3/4 

1 x 3 = 3

15 x 4 = 60

= 3/60 = 1/20

Multiplying Proper Fractions (Method 2)

100

3/8 x 8/9 = ?

3/8 = 1/1

8/9 = 1/3 

=1/3

200

5/6 x 3/10 = ?

5/6 = 1/2

3/10 = 1/2

1/2 x 1/2 = 1/4

300

3/10 x 5/13 = ?

3/10 = 3/2

5/12 = 1/13

3/2 x 1/13 = 3/26

400

7/12 x 9/14 = ?

7/12 = 1/4

9/14 = 3/2

= 3/8

500

10/15 x 3/4 = ?

10/15 = 5/5

3/4 = 1/2

= 5/10 = 1/2