When things are grouped in fives, we can count them easily going up in 5s.
Count the candles.
We can count them one at a time, but that would take forever!
A better way is to count them in 5s.
5, 10, 15, 20, 25
There are 25 candles here.
Shall we have a go at some questions so that you can practise counting in 5s?