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Adding Fractions
When it comes to addition (and subtraction), fractions require that some conditions be met before we can perform mathematical operations on them. It is easier to work with simple fractions than compound fractions (sometimes called mixed numbers) so convert any compound fractions to simple fractions. To add fractions the denominators in both must be the same. One of the quickest ways to make denominators equivalent is to multiply one fraction by the other’s denominator. (Note: this does not necessarily result in the lowest common denominator). Once the denominators are equal simply add the numerators and simplify the fraction as necessary.
Add 3/7 and 2/9:
Memory Jogger
Note: Memory Jogger questions are not scored. They serve only to help you remember some of the course material covered thus far. You must select the correct answer in order to proceed to the next section.
The sum of 4/5 and 5/9 is: