Adding Fractions
Learning Objective
I can add fractions with unlike denominators by finding a common denominator.
Key Concepts
When adding fractions with unlike denominators, the first step is to find a common denominator by determining the least common multiple of the denominators.
To rename a fraction, you multiply both the numerator and the denominator by the same number to obtain an equivalent fraction with the common denominator.
After renaming fractions with a common denominator, you can add the numerators and keep the denominator the same, then check to see if the answer can be simplified.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
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1. What is the first step in adding fractions with unlike denominators?
2. Explain how finding the least common multiple (LCM) helps when adding fractions with unlike denominators.
3. Solve: 2/5 + 1/4. Show your work.
Educational Video
Adding Fractions with Unlike Denominators | Math with Mr. J
Math with Mr. J