We learnt that when adding 10 to a number we just need to jump down a square on the hundred square.
We also found a quick way of adding 9 to a number – add 10 first (by jumping down a square) then take away 1 (by jumping back 1 square).
If you would like to practise these skills try these games:
Octopus game – http://www.ictgames.com/octopus.html
Add 10 Sub challenge – http://www.ictgames.com/submarinenopad2.html
Hundred hunt + 10 - http://www.ictgames.com/100huntplus10.html
Hundred hunt + 9 – http://www.ictgames.com/100huntadd9.html
The Adding 9 fairy – http://www.ictgames.com/fairy2.html