Is 4/20 a terminating decimal?

Here we will show you how to determine if 4/20 is a terminating decimal or a non-terminating decimal.

A terminating decimal is a decimal number that has a finite number of decimals and does not go on indefinitely. We want to know if the decimal number you get when you divide the fraction 4/20 (4 ÷ 20) is terminating or non-terminating.

Here are the steps to determine if 4/20 is a terminating decimal number:

1) Find the denominator of 4/20 in its lowest form.
The greatest common factor (GCF) of 4 and 20 is 4. Convert 4/20 to its simplest form by dividing the numerator and denominator by its GCF:

		4 ÷ 4
		20 ÷ 4

		1
		5

Thus, the denominator of 4/20 in its lowest form is 5.

2) Find the prime factors of the answer in Step 1.
The prime factors of 5 are all the prime numbers that you multiply together to get 5. The prime factors of 5 are:

5

3) Determine if 4/20 is terminating
A fraction is a terminating decimal if the prime factors of the denominator of the fraction in its lowest form only contain 2s and/or 5s or no prime factors at all. This is the case here, which means that our answer is as follows:

4/20
= terminating

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