The Birthday Breakdown Trick

You have your audience ready, goodie.
Now is the time to workout the persons birthday. Ask for a volunteer.
Ask the volunteer to write the number of the month that they were born. Eg April is the 4th month
  • Get them to multiply that by 4
    Eg 4×4 = 16
  • Add 13 to the new number
    Eg 16 + 13 = 29
  • Now multiply that by 25
    29  x  25 = 725
  • Subtract 200 from the new amount
    725 – 200 = 525
  • Add the day of the month they were born
    525 + 2 = 527
  • Multiply that new number by 2
    527 x 2 = 1054
  • Subtract 40 from the new number
    1054 – 40 = 1014
  • Multiply that new number by 50
    1014 x 50 = 50700
  • Get them to add the last two digits of the year your were born (1971)
    50700 + 71 = 50771
  • Ask the volunteer for the answer.
    50771
Heres where the magic happens!
Subtract 10500 from the volunteers answer.
103386 – 10500 = 40271
4 = month
02 = day
71 = year
Just like MAGIC!