Category: Multiply by a 2-Digit Number

Pick your favorite topic below. Read the opening, then solve the math together!

Lucky 13?

Lots of people think that Friday the 13th is unlucky. But is it really? Read on to do the math behind lucky (and unlucky) numbers!

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Crazy Circle

An optical illusion is a picture that looks different from what is really happening on paper. Pictures where straight lines look bent, or where totally

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