Greatest Common Factor
Least Common Multiple
Simplifying Fractions
Comparing Fraction Values
100
The greatest common factor of 18 and 36.
What is 18?
100

8 and 4 

8

100

18/36 

1/2

100

1/2   ___   2/3  

<

200
The greatest common factor of 30 and 40.
What is 10?
200

2 and 9

18

200

6/8

3/4

200

3/6 _____ 4/8  

=

300
The greatest common factor of 15 and 45.
What is 15?
300

4 and 9

36

300

10/16 

5/8

300

2/8 _____ 1/4 

<

400
The greatest common factor of 64 and 16.
What is 16?
400

3 and 12

12

400

21/28 

3/4

400

1/3  _____   3/4 

>

500
The greatest common factor of 85 and 90.
What is 5?
500
6 and 4

12

500

40/50

4/5

500

3/5 _____ 6/10 

=
M
e
n
u