A. Find the GCF and LCM of the following numbers using the continuous division
method.
GCF LCM
1. 15 | 90
2. 28 | 36
3.8,20 | 36
4. 28, 56, 84
5.54 , 63 , 45
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A. Find the GCF and LCM of the following numbers using the continuous division
method.
GCF LCM
1. 15 | 90
2. 28 | 36
3.8,20 | 36
4. 28, 56, 84
5.54 , 63 , 45
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Verified answer
Greatest Common Factor and Least Common Multiple
1. 15 Ι 90
5˩ 15 90
3˩ 3 18
1 6
GCF: 5 x 3 = 15
LCM: 5 x 3 x 1 x 6 = 90
2. 28 Ι 36
2˩ 28 36
2˩ 14 18
7 9
GCF: 2 x2 = 4
LCM: 2 x 2 x 7 x 9 = 252
3. 8 Ι 20 Ι 36
2˩ 8 20 36
2˩ 4 10 18
2 5 9
GCF : 2 x 2 = 4
LCM: 2 x 2 x 2 x 5 x 9 = 360
4. 28 Ι 56 Ι 84
2˩ 28 56 84
2˩ 14 28 42
7˩ 7 14 21
1 2 3
GCF : 2 x 2 x 7 = 28
LCM : 2 x 2 x 7 x 1 x 2 x 3 = 168
5. 54 Ι 63 Ι 45
9˩ 54 63 45
6 7 5
GCF : 9
LCM : 9 x 6 x 7 x 5 = 1890
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