(no title)
I practice change-making math with my daughter and run into the missing penny problem.
Practicing some my math questions with my daughter:
If you give someone $1.00 for an item that costs $0.79, how much change will you expect back?
Her: 20 cents.
No, it’s 21 cents.
Her: But how are they going to give me the penny when it doesn’t exist?
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