Grade 5

Areas as fractions

Lesson

Practice

Lesson

You may have learned about fractions as areas of shapes.

Now watch this video to learn more about using shapes to understand fractions.

Remember, with any fraction model the:

denominator (the bottom number of the fraction) is the number of equal pieces to make the whole.
numerator (the top number of the fraction) is the number of equal pieces in the fraction.

Examples

Question 1

The shape on the right is divided along the dotted lines and split into a new shape.

Whole Shape

What fraction of the original is this new shape?

New Shape

QUESTION 2

The shape on the right is used to make a larger shape.

Original Shape

This is the shape we make:

Larger Shape

What fraction of the Larger Shape is the Original Shape?

Outcomes

5.NN1.05

Represent, compare, and order fractional amounts with like denominators, including proper and improper fractions and mixed numbers, using a variety of tools (e.g., fraction circles, Cuisenaire rods, number lines) and using standard fractional notation