Today we are going to talk about one less than a given number. You will need your number fans.
what does one less mean? Do you go backwards or forwards? When it’s one less does the number get bigger or smaller?
Using your number fans, can you find the number than is one less than these numbers? You may have to make some numbers if you don’t have the, on your number fan!
Now you are going to do a one less quiz on Purple Mash.
Look at the small number in the top box.
Click the number that is one less.