Step 3 Objective

Relate fractions to division and to their decimal representations.

Examples of what pupils should know and be able to do

Understand that finding one third is equivalent to dividing by 3, so One third of 15 is equivalent to 15 ÷ 3.
Recognise that Twelve thirds is another way of writing 12 ÷ 3.

Probing questions

Tell me some division questions that have the answer 2, 5, 10, 15, etc. How did you go about working this out?

Tell me some fractions of numbers (e.g. One half of 10) that are equal to 2, 5, 10, 15. How do these link to the division questions?

Tell me two fractions that are the same as 0.2. Are there any other decimals that have fractions that are both fifths and tenths?

What would you prefer, 3 pizzas shared between 4 people or 6 pizzas shared between 10 people? Explain why.

What if pupils find this a barrier?

Some pupils struggle with the variety of language and notation. Use matching activities with sets of cards representing fractions in different forms, for example:

A common misconception is that One third is 0.3 and One fifth is 0.5, etc.