Adding Mixed Numbers with Different Denominators
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Objective
I can add mixed numbers with unlike denominators by finding a common denominator.
Part 1 of 4
Warm-up video
Khan Academy · 2:21Vetted 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 mixed numbers with unlike denominators, you can separate the whole number parts from the fraction parts.
- 2
To add fractions, you need to have the same denominator, and the least common multiple can be used to find this.
- 3
After adding the fractions, you may need to simplify the fraction to arrive at the final answer.
Part 3 of 4
Practice
4 questions
What is the first step in adding mixed numbers with unlike denominators?
Why is it important to find a common denominator when adding fractions?
Part 4 of 4
Exit ticket
Quick comprehension check
“Add the mixed numbers 23 and 5/12 + 11 and 1/4. Show all steps, including finding a common denominator and simplifying your answer.”
Sample answer included in the free materials
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