Is 7/42 a repeating decimal?

Here we will show you how to determine if 7/42 is a repeating decimal or a non-repeating decimal.

A repeating decimal is a decimal number that goes on forever. We want to know if the decimal number you get when you divide the fraction 7/42 (7 ÷ 42) is repeating or non-repeating.

Here are the steps to determine if 7/42 is a repeating decimal number:

1) Find the denominator of 7/42 in its lowest form.
The greatest common factor (GCF) of 7 and 42 is 7. Convert 7/42 to its simplest form by dividing the numerator and denominator by its GCF:

		7 ÷ 7
		42 ÷ 7

		1
		6

Thus, the denominator of 7/42 in its lowest form is 6.

2) Find the prime factors of the answer in Step 1.
The prime factors of 6 are all the prime numbers that you multiply together to get 6. The prime factors of 6 are:

2 x 3

3) Determine if 7/42 is repeating
A fraction is a repeating decimal if the prime factors of the denominator of the fraction in its lowest form do not only contain 2s and/or 5s or do not have any prime factors at all. This is the case here, which means that our answer is as follows:

7/42
= repeating

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