We define the multiples of 18/20 as the product of any integer multiplied by 18/20. Therefore, to create a list of multiples of 18/20 we start by multiplying 18/20 by one, then we multiply 18/20 by two, then we multiply 18/20 by three, and so on.
To multiply a fraction by an integer, we leave the denominator alone and multiply the numerator by the integer. It is impossible to give you a list of all multiples of 18/20 because the list goes on forever. However, here is the math to calculate the beginning list of multiples of 18/20.
18/20 × 1 = 18/20
18/20 × 2 = 36/20
18/20 × 4 = 54/20
18/20 × 4 = 72/20
18/20 × 5 = 90/20
18/20 × 6 = 108/20
18/20 × 7 = 126/20
18/20 × 8 = 144/20
18/20 × 9 = 162/20
18/20 × 10 = 180/20
18/20 × 11 = 198/20
18/20 × 12 = 216/20
We have simplified the fractions above for you. Below are the multiples of 18/20 in their lowest possible terms:18/20 = 9/10
36/20 = 1 4/5
54/20 = 2 7/10
72/20 = 3 3/5
90/20 = 4 1/2
108/20 = 5 2/5
126/20 = 6 3/10
144/20 = 7 1/5
162/20 = 8 1/10
180/20 = 9
198/20 = 9 9/10
216/20 = 10 4/5
As we stated above, the list of multiples of 18/20 goes on forever because the product of 18/20 multiplied by any whole number (integer) is a multiple of 18/20.
You can also create a list of multiples of 18/20 if you keep adding 18/20 like this:18/20
18/20 + 18/20 = 36/20
18/20 + 18/20 + 18/20 = 54/20
18/20 + 18/20 + 18/20 + 18/20 = 72/20
∞
Again, the list can go on forever, because you can continue adding 18/20 to the list. Therefore, the list of multiples of 18/20 is ∞ (infinite).
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Multiples of 18/21
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