PSLE Answer the following.
- What is the first common multiple of 3 and 6?
- List all the common factors of 36 and 63. Give your answers in numbers in ascending order. (Eg $(n1), $(n2), 3)
(a)
Multiples of 3: 3, 6
Multiples of 6: 6
First common multiple: 6
(b)
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
Factors of 63: 1, 3, 7, 9, 21, 63
Common factors of 36 and 63: 1, 3, 9
Answer(s): (a) 6; (b) 1, 3, 9