let’s move on to least common multiple!
Post on 05-Jan-2016
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It starts exactly like GCF!
LET’S MOVE ON TO LEAST COMMON
MULTIPLE!
(1) Follow the steps to find the Greatest Common Factor.
(2) Multiply the GCF by the last two dividends in the chart.
2 x 2 x 3 x 2 x 3 = 72
LEAST COMMON MULTIPLE
24
12
6
÷
2
2
36
18
9
2, 3, 5 & 7
LCM
4 x
12 x 6 = 72
=
x
6
3233
12
x
(1) Follow the steps to find the Greatest Common Factor.
(2) Multiply the GCF by the last two dividends in the chart.
2 x 3 x 3 x 1 x 5 = 90
LEAST COMMON MULTIPLE
18
9
3
÷
3
2
90
45
15
2, 3, 5 & 7
LCM
6 x
18 x 5 = 90
=
x
5
5133
18
x
(1) Follow the steps to find the Greatest Common Factor.
(2) Multiply the GCF by the last two dividends in the chart.
2 x 5 x 5 x 9 = 450
LEAST COMMON MULTIPLE
50
25
5
÷
5
2
90
45
9
2, 3, 5 & 7
LCM
10
x
10 x 45 = 450=
x
45
(1) Follow the steps to find the Greatest Common Factor.
(2) Multiply the GCF by the last two dividends in the chart.
2 x 2 x 2 = 8
NOW, YOU TRY!
4
2
1
÷
2
2
8
4
2
2, 3, 5 & 7
LCM
4 x
4 x 2 = 8=
x
2
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