PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 7 and 9
- LCM of 5 and 20
- LCM of 12 and 16
- LCM of 2, 3 and 8
(a)
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63
Multiples of 9: 9, 18, 27, 36, 45, 54, 63
LCM of 7 and 9 =
63 (b)
Multiples of 5: 5, 10, 15, 20
Multiples of 20: 20
LCM of 5 and 20 =
20 (c)
Multiples of 12: 12, 24, 36, 48
Multiples of 16: 16, 32, 48
LCM of 12 and 16 =
48 (d)
Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24
Multiples of 8: 8, 16, 24
LCM of 2, 3 and 8 =
24 Answer(s): 63, 20, 48, 24