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 4 and 18
- LCM of 15 and 20
- LCM of 3, 4 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 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Multiples of 18: 18, 36
LCM of 4 and 18 =
36 (c)
Multiples of 15: 15, 30, 45, 60
Multiples of 20: 20, 40, 60
LCM of 15 and 20 =
60 (d)
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24
Multiples of 4: 4, 8, 12, 16, 20, 24
Multiples of 8: 8, 16, 24
LCM of 3, 4 and 8 =
24 Answer(s): 45, 36, 60, 24