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A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.

Which Numbers? (2)

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

You could start by putting the information you do know onto a hundred square.
You might record them on a hundred square like this:

You can find a special hundred square here.