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# What is fractional notation?

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Fractional notation is a form that non-whole numbers can be written in, with the basic form a/b. Fractional notation is often the preferred form to work with if a calculator is not available.

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Credit: ufv CC-BY 2.0

There are two general forms that non-whole numbers can be written in: fractional and decimal. For decimal notation, any part of a number is simply written after the decimal. For example, 9/2 is equal to 4.5, where 0.5 is the non-whole part left over. Numbers in decimal form can be added directly to each other in all situations, while fractions can only be added to each other directly if they share a common denominator.

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## Related Questions

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The decimal form of 4/5 is .8, which can also be written as 0.8 or 0.80. Fractions can be converted into decimals using a calculator or by doing the math manually.

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In fraction form, the decimal 1.2 converts to 6/5. To check the answer's accuracy, simply divide the bottom number into the top number. The result is the original decimal of 1.2.

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The fraction 3/8 written in decimal form is 0.375. According to Syracuse University, converting a fraction to a decimal involves dividing the part on the top of the fraction (the numerator) by the part on the bottom (the denominator). In this case, three is divided by eight.