#30 Math Minute: What day of the week is it?

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I found this very complex mathematical formula that allows one to figure out the day of the week any date falls on.  Don’t let the formula intimidate you!  I did this with some 3rd graders today and with a few explanations, they were able to figure it out.  So can you!

Click here for a quick tutorial on how to use the formula

How can you spend your Math Minutes this week?

  • Watch the video linked above
  • Figure out the day of the week you were born on using your birthdate and year.
  • Figure out the day of the week for another date in history (Pearl Harbor, Declaration of Independence, etc.).
  • Check out this Dr. Math Forum post for some more information about calendars and even a different formula to use

Turn in all LEGIBLE work to the EY coordinator at your building for a small prize!

2 thoughts on “#30 Math Minute: What day of the week is it?

    1. You basically ignore the digits after the decimal place. If your remainder is more than 7, that means that you can divide more. For example, 14 divided by 7. If you said 7 went into 14 one time, there would be a reminder of 7. That just means that 7 can go into 14 two times. Does that make sense?

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