Fraction Multiplication and Area
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Objective
I can find the area of rectangles with fractional side lengths by tiling the area with rectangles with side lengths that are unit fractions. I csn find the area of rectangles with fractional side lengthsby multiplying side lengths
Part 1 of 4
Warm-up video
Khan Academy · 5:06Vetted 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
When multiplying fractions, we multiply the numerators to get the new numerator, and multiply the denominators to get the new denominator.
- 2
2/3 × 4/5 means we are trying to find 4/5 of 2/3, or 2/3 of 4/5.
- 3
Splitting each third into five parts results in 15ths, because 3 multiplied by 5 is 15.
Part 3 of 4
Practice
10 questions
What is the result of multiplying 3/4 by 2/5?
Explain in your own words why multiplying the numerators and denominators works when multiplying fractions.
Part 4 of 4
Exit ticket
Quick comprehension check
“A rectangle has a length of ⁵⁄₈ inches and a width of ⅔ inches. What is the area of the rectangle? Show your work.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
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