# Math Club

### This is an online event.

Math Trick #1. Finding someone's age

Math Trick #2. Determine someone's birthday

Math Trick #3. Reading someone's mind with math

## Finding someone's age

• Ask the person to multiply the first number of his or her age by 5.
• Tell them to add 3.
• Now tell them to double this figure.
• Finally, have the person add the second number of his or her age to the figure and have them tell you their answer.
• Deduct 6 and you will have their age.

## Determine someone's birthday

Just follow the steps with a calculator or by hand for building math skills! Go ahead and try the trick without cheating!

• Add 18 to your birth month
• Multiply by 25
• Subtract 333
• Multiply by 8
• Subtract 554
• Divide by 2
• Add your birth date
• Multiply by 5
• Add 692
• Multiply by 20
• Add only the last two digits of your birth year
• Subtract 32940 to get your birthday!

## Reading someone's mind with math

Just follow the steps with a calculator or by hand for building math skills! Go ahead and try the trick without cheating!

• Tell the person to chose a number between 1-10.
• Tell them to multiply their number by 2.
• Ask them to multiply the new number by 5.
• Have them divide their current number by their original number.
• Instruct them to subtract 7 from their current number.
• "Guess" the answer! If the prior steps were done correctly, the right answer will always be 3.
• For example, if your friend chooses 3: 3x2=6. 6x5=30. 30/3=10. 10-7=3.