Section 4.4-4.6 Practice

Least Common Multiple

100

Find the LCM of 54 and 12 using prime factorization.

108

200

Find the LCM of 18 and 24 using prime factorization.

72

300

Find the LCM of 36 and 24 using prime factorization.

72

400

Find the LCM of 12 and 18 using prime factorization.

36

500

Find the LCM of 72 and 108 using prime factorization.

216

Adding Fractions

100

2/3 + 5/8

31/24

200

7/36 + 7/54

35/108

300

-2/7 + 4/5

18/35

400

1/2 + 3x/5

5+6x/10

500

2/x + 1/3

6 + x/3x

Subtracting Fractions

100

7/9 - (-1/9)

8/9

200

-1/3 - (-2/3)

1/3

300

-1/4 -1/2

-3/4

400

5/8 - (-3/4)

11/8

500

7x/8 - 5/9

63x-40/72

Mixed Numbers 1

100

Change to an improper fraction: 7 3/8

59/8

200

Change to an improper fraction: -3 5/12

-41/12

300

1 3/7 times -3 3/4

-5 5/14

400

-2 1/2 times -1 7/11

4 1/11

500

9 times -1 2/15

-10 1/5

Mixed Numbers 2

100

Changed to a mixed number: 38/9

4 2/9

200

Change to a mixed number: -43/5

-8 3/5

300

-3 1/2 divided by 1 1/16

-3 5/17

400

-6 divided by -1 3/11

4 5/7

500

-6 1/2 divided by 4 1/4

-1 9/17