Find the following values without a calculator.
For 3 and 8,
- what is the first common multiple?
- what is the second common multiple?
- what is the fourth common multiple?
(a)
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48
Multiples of 8: 8, 16, 24, 32, 40, 48
First common multiple = 24
(a)
24 x 2 = 48
Second common multiple = 48
(a)
24 x 4 = 96
Fourth common multiple = 96
Answer(s): (a) 24; (b) 48; (c) 96