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The Birthdays

Time to celebrate with this puzzle!

Happy birthday! In this puzzle, you must find the maximum number of friends that can be present at the birthday party. And the only clue you have is a bit strange…

This puzzle juggles calendar dates and addition. Blow the candles and wish for the solution! 

  • Your students can use a calendar to solve this puzzle more easily. It will be challenging for third- and fourth-graders, because they must apply a logical reasoning before using arithmetic operations.

  • Planning notes