First multiples of 80 are 1 and 80
The first four multiples of 20 are: 20 40 60 80
Not all multiples of 40 are multiples of 80. Only the even multiples of 40 are also multiples of 80. The odd multiples, e.g. 40, 120, 200, 280, and 360, are not multiples of 80.
80, 160, 240, 320, 400 and 480.
The first six multiples of 40 are 40, 80, 120, 160, 200, and 240.
Multiples of 80 are 10 and 8
20, 40, 60, 80, 100, 120 * * * * * These are the first six multiples!
-15
The first 5 multiples of 4 and 20 are 20, 40, 60, 80, 100
20, 40, 60, 80.
They are 40 and 80
The first 10 multiples of 10 are: 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100.
16, 32, 48, 64, 80