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

#LET'SSTUDY

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