Adding Fractions

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Objective

I can add fractions with unlike denominators by finding a common denominator and then combining the fractions.

Part 1 of 3

Warm-up video

mathantics · 4:22Vetted channel

We don't generate video — this one is by mathantics 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 3

Practice

7 questions

1

Explain why you cannot simply add the numerators and denominators of fractions with unlike denominators to find their sum.

2

What is a common denominator, and why is it necessary when adding fractions with different denominators?

Part 3 of 3

Exit ticket

Quick comprehension check

A recipe requires ⅓ cup of flour and ¼ cup of sugar. How much flour and sugar is needed in total? Show all your calculations to find the common denominator and the final sum. A gardener has ⅖ of a bag of soil and buys another ⅗ of a bag. How much soil does the gardener have in total? Show all your calculations to find the common denominator and the final sum.

Sample answer included in the free materials

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