I created this PowerPoint for a 1st grade lesson on subtraction. It's easily changeable.
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Math Monkey Muddle - Unknown number subtraction
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Thanks for putting this up - another useful resource I don't have to prepare.
This works in with what we were covering today. I will be able to use this as revision lesson. Thanks so much.
Thanks Ali, nicely differentiated
thanks, I like it! <br/>
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