Free printable, I am a bit late adding this but just found it on my computer so better late than never.
Some challenge cards for addition – differentiated for different levels of ability.
This website is set up and run by me to share resources that I make for the classroom - I am full time teacher. Do look round the site, there are over 700 downloads available. If you find the resources I put up helpful, please share with others.
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Many thanks, Jo