GCF and LCM
Evaluate the Expression
Simplify
Fractions
Substitution
100

GCF for  8, 12

4

100

10 x10 x10 x10 (use an exponent)

10 4

100

4/24 

1/6

100

1/6 x 4/5

2/15

100

x 2 + 3x     x = 1.7

7.99

200

GCF 12, 24

12

200

2 7

128

200

9/27

1/3

200

1/8 ÷  2/5

5/16

200

z ÷  10  z = 2/4

1/20

300

LCM 4,9

36

300

80 - 4 2 ÷  8

78

300

9y + 4 - 6y

3y +4

300

1 3/5 + 2 2/3

5 4/15

300

5x + ( x ÷  3) = 38.4

Which makes the statement true? 

a) x= 5.1         b) x= 6.1        c) x= 7.2

c

400

LCM 8,10

40

400

92.3 - (3.2 ÷  0.4) x 2 3 =

28.3

400

10x + 2x - 12x

0

400

2 4/5 - 3/10

2 1/2

400

2j + 3/5               j = 5

10 3/5

500

LCM 3,6

6

500

(20 + (2.5 x 3) ) - 3 3 =

0.5

500

4x + 15 - 3x + 10 

x + 25

500

4 2/5 ÷  3/4

5 13/15

500

x 2 + 2y ÷  2w + 3z    

w=2 , x = 5,   y = 8, z = 3

38

M
e
n
u