Cool Common Denominator Adding Fractions References
Cool Common Denominator Adding Fractions References. Add up the numerators and leave the denominator unchanged: Go straight to step 2.

If and are numbers where , then. The easiest sheet, no simplifying or converting needed. However, the most efficient way of adding fractions with different denominators is to use the lcm.
Make The Denominators The Same.
Do nothing with the denominator. Before you add two fractions with different denominators, check the denominators to see whether one is a multiple of the other. Add or subtract the numerators of the fractions as indicated.
The Bottom Numbers (The Denominators) Are Already The Same.
Add the numerators and place the sum over the common denominator. Add the numerators (1 + 6 = 7). So, for each fraction we need an equivalent fraction with a denominator of 6.
You're In The Right Place!Whethe.
To subtract fractions, subtract the numerators and place the difference over the common denominator. Therefore, the reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size. Any common multiple of the denominators can be used as the common denominator.
(Here, The Denominators Are Already The Same, So We Move To The Next Step) Step 2:
You may find it helpful to start with the main fractions lesson for a summary of what to expect, or use the step. How to add fractions with different denominators step 1: If and are numbers where , then.
Keep The Denominator The Same (The Bottom Number Stays A 10).
To add fractions with the same denominators, add their numerators and leave the denominator unchanged. This will be the new numerator. 2 4 = 1 2.