To triple means to become three times as many or to multiply by three.

Solve problems using the relationship between 3 and 9 times table

Maths

In this unit pupils will explain the relationship between multiples of 3 and multiples of 9 and use it to solve problems.  In the future unit pupils will represent counting in sevens as the 7x table explaining the relationship between adjacent multiples of 7 and knowledge of the 7x table to solve problems 

In the prior unit pupils represented counting in nines as the 9x table explaining the relationship between adjacent multiples of 9. They used known facts from the 10x table to solve problems involving the 9x table.  In this unit pupils will explain the relationship between multiples of 3 and multiples of 9 and use it to solve problems.

Relationship between the 3 and 9 times tables

Look at the word problem, which words suggest we must divide?
A baker baked 36 cupcakes. He splits them equally into boxes of 9, how many boxes will he need?

Andeep’s grandfather caught 99 fish on his recent trip to Osney Lock.
If he puts the fish into boxes of 9, how many boxes will he need? {{ }} boxes

What calculation is correct for this worded problem?
If Izzy sliced a ribbon into four 9 cm pieces, how many  3 centimetre slices would she be able to cut?

A baker baked 108 pastries and cakes altogether. He can put them in 12 boxes of 9
If he puts them into boxes of 3 how many boxes will he need? {{ }} boxes

Which calculation does the image represent?

Match the groups of threes to the groups of 9 with the same value.

If I know 3 × 4 = 12, then I know 9 × 4= {{ }}

If Izzy has collected 30 guinea cards and Andeep has triple the amount, how many cards does he have altogether?  30 × 3 = {{ }}

This lesson will soon be taken down.

Solve problems using the relationship between 3 and 9 times table

Lesson outcome