Lesson

Do you know how to find a fraction of a collection of objects ?

Which of the following shows that \dfrac{1}{2} of these flowers have been selected?

A

B

C

Worked Solution

Idea summary

To find a fraction of an amount, use the:

- denominator (bottom number) to divide the items into equal groups.
- numerator (top number) to select the number of groups.

This video looks at how to use fractions to divide up a group of objects.

Which of the following shows that \dfrac{3}{4} of these ice creams have been selected?

A

B

C

Worked Solution

Idea summary

The **denominator** tells us the number of equal parts that we need to divide the collection of objects into.

The **numerator** tells us the number of equal parts that we need to select to represent our fraction.

To find a fraction of a collection, we can first find the unit fraction of the collection, then multiply it so that we get the desired fraction.