Adding Fractions
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Objective
I can add fractions with unlike denominators by finding a common denominator.
Part 1 of 4
Warm-up video
Khan Academy · 4:02Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
To add fractions with unlike denominators, you must first find a common denominator.
- 2
The least common multiple of 2 and 3 is 6, so we can express ½ as 3/6 and ⅓ as 2/6.
- 3
When adding fractions with a common denominator, add the numerators and keep the same denominator, so 3/6 + 2/6 = 5/6.
Part 3 of 4
Practice
10 questions
What is a common denominator, and why is it important when adding fractions?
Explain how multiplying the numerator and denominator of a fraction by the same number does not change the value of the fraction.
Part 4 of 4
Exit ticket
Quick comprehension check
“Solve for ⁵⁄₁₂ + ⅓. Show all steps, including finding the common denominator.”
Sample answer included in the free materials
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Teacher Guide
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