What is a multiple of 3 and 100

Think of multiples as multiplication tables

multiples of 3 are:

3 x 1 = 3

3 x 2 = 6

3 x 3 = 9

so multiples of 3 are (3,6,9,12,15,18)

same as multiples of 100 ...

100 x 1 = 100

100 x 2 = 200

100 x 3 = 300

so multiples of 100 are (100,200,300)

the common multiple of 3 and 100 is 300

The multiple of 3 and 100 is 33