Adding and Subtracting Fractions
Learning Objective
I can add and subtract fractions with unlike denominators.
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, multiply both the numerator and the denominator by the same number to create an equivalent fraction.
After renaming fractions with a common denominator, add the numerators and keep the denominator the same, then check to see if the answer can be simplified.
Practice Questions
This lesson includes 9 practice questions to reinforce learning.
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1. What is the first step in adding fractions with unlike denominators?
2. Explain why it is important to have a common denominator when adding fractions.
3. What is the least common multiple (LCM) and why is it useful when adding fractions?
...and 6 more questions
Educational Video
Adding Fractions with Unlike Denominators | Math with Mr. J
Math with Mr. J