Most Difficult Math Fact in the Whole Times Table

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Happy Multiplication Day!

For help learning the Times Table facts, check out my multiplication blog post series:

Encourage your family to play with math every day:


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2 thoughts on “Most Difficult Math Fact in the Whole Times Table

  1. I think the multiplication table can be a good tool for professional development; there are a lot of great non-routine questions you can ask about it, and it has a low-entry point [teachers have all seen it some capacity] with problems ranging from challenging (What percentage of the entries in a filled out 10 by 10 table is odd?) to way-too-difficult (Can you find a formula for the number of distinct entries in an nxn table?). &c.

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