PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 5 and 9
- LCM of 8 and 11
- LCM of 12 and 20
- LCM of 2, 3 and 8
(a)
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45
Multiples of 9: 9, 18, 27, 36, 45
LCM of 5 and 9 =
45 (b)
Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88
Multiples of 11: 11, 22, 33, 44, 55, 66, 77, 88
LCM of 8 and 11 =
88 (c)
Multiples of 12: 12, 24, 36, 48, 60
Multiples of 20: 20, 40, 60
LCM of 12 and 20 =
60 (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): 45, 88, 60, 24