5. Fractions
5.04 Add and subtract fractions with models
Lesson
Are you ready?
Let's review how to identify a fraction using a model.
What fraction of the square is shaded blue?
Leave the answer in unsimplified form.
Learn
This video shows how to add and subtract fractions using an area model.
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Apply
question 1
In the image below, $\frac{6}{8}$68 has been shaded red and $\frac{1}{8}$18 has been shaded blue.
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Write the addition that describes the image.
What is the total shaded?
question 2
The image below shows $\frac{8}{10}$810 of the rectangle shaded.
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We now want to take away $\frac{1}{10}$110.
What is the answer to $\frac{8}{10}-\frac{1}{10}$810−110?
Remember!
Area models can help us see the parts of fractions that are being added or subtracted.