Lesson

Let's practice finding 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.

Count by quarters, halves and thirds, including with mixed numerals. Locate and represent these fractions on a number line