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 8 and 12
- LCM of 15 and 18
- LCM of 2, 4 and 5
(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 8: 8, 16, 24
Multiples of 12: 12, 24
LCM of 8 and 12 =
24 (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
Multiples of 4: 4, 8, 12, 16, 20
Multiples of 5: 5, 10, 15, 20
LCM of 2, 4 and 5 =
20 Answer(s): 56, 24, 90, 20