Finding GCF and LCM
Find the LCM of 30 and 5.
5: 5, 10, 15, 20, 25, 30, 35 ...
30: 30, 60, 90 ...
LCM is 30.
Convert the following fraction to a mixed number:
9/4
2 1/4
Simplify the following fraction:
2/10
2: 1x2
10: 1x10, 2x5
1/5
1/3 + 1/4
3: 3, 6, 9, 12, 15, 18...
4: 4, 8, 12, 16, 20...
4/12 + 3/12
7/12
1/2 x 3/4
3/8
Find the GCF of 15 and 24.
15: 1x15, 3x5
24: 1x24, 2x24, 3x8, 4x6
GCF is 3.
Convert the following to an improper fraction:
4 5/6
29/6
Simplify the following fraction:
6/24
6: 1x6, 2x3
24: 1x24, 2x12, 3x8, 4x6
1/4
8/9 - 5/9
3/9 OR 1/3
3/4 x 1/5
3/20
Find the LCM of 60 and 4.
4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60 …
60: 60, 120, 180 …
The LCM is 60.
Convert the following to a mixed number:
27/5
5 2/5
Simplify the following fraction:
9/45
9: 1x9
45: 1x45, 3x15, 5x9
1/5
1/4 + 1/5
4: 4, 8, 12, 16, 20, 24, 28...
5: 5, 10, 15, 20, 25...
5/20 + 4/20
9/20
1/3 x 3/5
3/15 --> 1/5
3: 1x3
15: 1x15, 3x5
Find the GCF of 32 and 8.
8: 1x8, 2x4
32: 1x32, 2x16, 4x8
GCF is 8.
Convert the following to an improper fraction:
3 5/7
26/7
Simplify the following fraction:
25/100
25: 1x25, 5x5
100: 1x100, 2x50, 4x25, 5x20
1/4
1/2 - 3/7
2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20...
7: 7, 14, 21...
7/14 - 6/14
1/14
4/3 x 3/1
12/3 --> 4
Find the GCF of 25 and 100.
25: 1x25, 5x5
100: 1x100, 2x50, 4x25, 5x20
The GCF is 25.
Convert the following to a mixed number:
62/10
6 2/10 OR 6 1/5
Simplify the following fraction:
5/36
5: 1x5
36: 1x36, 2x18, 3x12, 4x9
5/36
7/9 - 2/3
9: 9, 18, 27...
3: 3, 6, 9, 12...
7/9 - 6/9
1/9
4/3 x 2/1
8/3 --> 2 2/3