Video Transcript
There are four books on one shelf
and five books on another. How many books are there
altogether?
There are five books on this shelf
and four books on this shelf. How many books are there
altogether? We need to work out what five plus
four is. We can use a number line to help
us.
We can start counting at number
five and add four more. To do this, we need to count
forward four times: one, two, three, four. Five plus four equals nine. There are nine books
altogether.
