PSLEFind the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- LCM of 4 and 6
- LCM of 9 and 12
- LCM of 15 and 18
- LCM of 2, 5 and 7
(a)
Multiples of 4: 4, 8, 12
Multiples of 6: 6, 12
LCM of 4 and 6 =
12 (b)
Multiples of 9: 9, 18, 27, 36
Multiples of 12: 12, 24, 36
LCM of 9 and 12 =
36 (c)
Multiples of 15: 15, 30, 45, 60, 75, 90
Multiples of 18: 18, 36, 54, 72, 90
LCM of 15 and 18 =
90 (d)
Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70
LCM of 2, 5 and 7 =
70 Answer(s): 12, 36, 90, 70