PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 4 and 9
- LCM of 7 and 11
- LCM of 16 and 20
- LCM of 4, 5 and 8
(a)
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Multiples of 9: 9, 18, 27, 36
LCM of 4 and 9 =
36 (b)
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77
Multiples of 11: 11, 22, 33, 44, 55, 66, 77
LCM of 7 and 11 =
77 (c)
Multiples of 16: 16, 32, 48, 64, 80
Multiples of 20: 20, 40, 60, 80
LCM of 16 and 20 =
80 (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): 36, 77, 80, 40