PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 2 and 7
- LCM of 7 and 14
- LCM of 15 and 20
- LCM of 2, 5 and 8
(a)
Multiples of 2: 2, 4, 6, 8, 10, 12, 14
Multiples of 7: 7, 14
LCM of 2 and 7 =
14 (b)
Multiples of 7: 7, 14
Multiples of 14: 14
LCM of 7 and 14 =
14 (c)
Multiples of 15: 15, 30, 45, 60
Multiples of 20: 20, 40, 60
LCM of 15 and 20 =
60 (d)
Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
Multiples of 8: 8, 16, 24, 32, 40
LCM of 2, 5 and 8 =
40 Answer(s): 14, 14, 60, 40