So you've decided to spend some time using known times table facts in order to solve multiplication and division problems.
What are the known facts?
In this activity, the known facts you will use are times tables with related division facts.
By the end of Year 4, you are expected to know all of the multiplication and related division facts for all of the times tables up to 12x.
Why do we use known facts?
Known facts are a great way to work out related facts and to help you solve larger, more complex calculations.
20 x 6 = ?
We know 2 x 6 = 12
So, 20 x 6 = 120
The ten from 12 becomes 100 and the 2 becomes 20.
In class 6E, there are 20 pupils and each earns 14 housepoints in one week.
How many housepoints do they earn in total?
We use a known fact first:
14 x 2 = 28
So, 14 x 20 = 280
The 20 from the 28 becomes 200 and the 8 becomes 80.
So, 14 x 20 = 280 housepoints.
Now it's over to you now to have a go at some practise questions, good luck!