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For each pair of integers, find the least common multiple (LCM) between them.
( 1 ) 5 and 5 ( 8 ) 20 and 20
( 2 ) 8 and 27
( 9 ) 35 and 16
( 3 ) 7 and 4
(10) 12 and 50
( 4 ) 9 and 24
(11) 21 and 48
( 5 ) 36 and 28
(12) 56 and 56
( 6 ) 32 and 18
(13) 40 and 60
( 7 ) 25 and 15
(14) 14 and 14
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A N S W E R K E Y
For each pair of integers, find the least common multiple (LCM) between them.
( 1 ) 5 and 5
5 = 1 · 5
5 = 1 · 5
LCM = 1 · 5
= 5
( 8 ) 20 and 20
20 = 2
2
· 5
20 = 2
2
· 5
LCM = 2
2
· 5
= 20
( 2 ) 8 and 27
8 = 2
3
27 = 3
3
LCM = 2
3
· 3
3
= 216
( 9 ) 35 and 16
35 = 5 · 7
16 = 2
4
LCM = 2
4
· 5 · 7
= 560
( 3 ) 7 and 4
7 = 1 · 7
4 = 2
2
LCM = 1 · 2
2
· 7
= 28
(10) 12 and 50
12 = 2
2
· 3
50 = 2 · 5
2
LCM = 2
2
· 3 · 5
2
= 300
( 4 ) 9 and 24
9 = 3
2
24 = 2
3
· 3
LCM = 2
3
· 3
2
= 72
(11) 21 and 48
21 = 3 · 7
48 = 2
4
· 3
LCM = 2
4
· 3 · 7
= 336
( 5 ) 36 and 28
36 = 2
2
· 3
2
28 = 2
2
· 7
LCM = 2
2
· 3
2
· 7
= 252
(12) 56 and 56
56 = 2
3
· 7
56 = 2
3
· 7
LCM = 2
3
· 7
= 56
( 6 ) 32 and 18
32 = 2
5
18 = 2 · 3
2
LCM = 2
5
· 3
2
= 288
(13) 40 and 60
40 = 2
3
· 5
60 = 2
2
· 3 · 5
LCM = 2
3
· 3 · 5
= 120
( 7 ) 25 and 15
25 = 5
2
15 = 3 · 5
LCM = 3 · 5
2
= 75
(14) 14 and 14
14 = 2 · 7
14 = 2 · 7
LCM = 2 · 7
= 14
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