Find the following values without a calculator.
For 3 and 6,
- 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 6: 6, 12, 18, 24, 30, 36, 42, 48
First common multiple = 6
(a)
6 x 2 = 12
Second common multiple = 12
(a)
6 x 4 = 24
Fourth common multiple = 24
Answer(s): (a) 6; (b) 12; (c) 24