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Whole Number-Fraction Arithmetic Help

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By — McGraw-Hill Professional
Updated on Sep 26, 2011

Whole Number-Fraction Arithmetic - Addition

A whole number can be written as a fraction whose denominator is 1. With this in mind, we can see that addition and subtraction of whole numbers and fractions are nothing new.

Adding a Whole Number to a Fraction

To add a whole number to a fraction, multiply the whole number by the fraction’s denominator. Add this product to the fraction’s numerator. The sum will be the new numerator.

Example

Whole Number-Fraction Arithmetic Example

Find practice problems and solutions at Whole Number-Fraction Arithmetic Practice Problems - Set 1.

Subtracting a Fraction from a Whole Number

To subtract a fraction from a whole number multiply the whole number by the fraction’s denominator. Subtract the fraction’s numerator from this product. The difference will be the new numerator.

Example

Whole Number-Fraction Arithmetic Example

Find practice problems and solutions at Whole Number-Fraction Arithmetic Practice Problems - Set 2.

Subtracting a Whole Number from a Fraction

To subtract a whole number from the fraction, again multiply the whole number by the fraction’s denominator. Subtract this product from the fraction’s numerator. This difference will be the new numerator.

Example

Whole Number-Fraction Arithmetic Example

Find practice problems and solutions at Whole Number-Fraction Arithmetic Practice Problems - Set 3.

Practice problems for this concept can be found at: Algebra Fractions Practice Test.

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