PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 4 and 7
- LCM of 5 and 20
- LCM of 12 and 18
- LCM of 4, 7 and 8
(a)
Multiples of 4: 4, 8, 12, 16, 20, 24, 28
Multiples of 7: 7, 14, 21, 28
LCM of 4 and 7 =
28 (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
Multiples of 18: 18, 36
LCM of 12 and 18 =
36 (d)
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56
Multiples of 8: 8, 16, 24, 32, 40, 48, 56
LCM of 4, 7 and 8 =
56 Answer(s): 28, 20, 36, 56