http://www.youtube.com/watch?v=jHvDTTPW4z8
You should watch this video! It's not only cute but it's hilarious. My sister showed it to me after we got a call from our cousin asking for help with his math. Unfortunately I couldn't help... He needed to show four different ways to subtract a negative number from a positive number.
Example: 10 - (-6)=?
Of course I know the answer to that but he needed four ways of showing how it worked. I could only think of three... and he already had those... T-T
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