PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 7 and 8
- LCM of 5 and 12
- LCM of 12 and 20
- LCM of 4, 5 and 8
(a)
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56
Multiples of 8: 8, 16, 24, 32, 40, 48, 56
LCM of 7 and 8 =
56 (b)
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
Multiples of 12: 12, 24, 36, 48, 60
LCM of 5 and 12 =
60 (c)
Multiples of 12: 12, 24, 36, 48, 60
Multiples of 20: 20, 40, 60
LCM of 12 and 20 =
60 (d)
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
Multiples of 8: 8, 16, 24, 32, 40
LCM of 4, 5 and 8 =
40 Answer(s): 56, 60, 60, 40