Animations Slide Math-Magic: Mind Reading 1/28 Mind Reading An Exercise in Math-Magic

Animations Slide Math-Magic: Mind Reading 2/28 O LORD, you have searched me and you know me. 2 You know when I sit and when I rise; you perceive my thoughts from afar. 3 You discern my going out and my lying down; you are familiar with all my ways. 4 Before a word is on my tongue you know it completely, O LORD. 5 You hem me in—behind and before; you have laid your hand upon me. 6 Such knowledge is too wonderful for me, too lofty for me to attain. David, King of Israel, ≈ 1000 BC

Animations Slide Math-Magic: Mind Reading 3/28 Think of a Two Digit Number Subtract the sum of the Two Digits from your Number Find the SYMBOL associated with your Difference in the table below

Animations Slide Math-Magic: Mind Reading 4/28 Think of a Two Digit Number Subtract the sum of the Two Digits from your Number Find the SYMBOL associated with your Difference in the table below

Animations Slide Math-Magic: Mind Reading 5/28 Think of a Two Digit Number Subtract the sum of the Two Digits from your Number Find the SYMBOL associated with your Difference in the table below

Animations Slide Math-Magic: Mind Reading 6/28 Think of a Two Digit Number Subtract the sum of the Two Digits from your Number Find the SYMBOL associated with your Difference in the table below

Animations Slide Math-Magic: Mind Reading 7/

Animations Slide Math-Magic: Mind Reading 8/28

Animations Slide Math-Magic: Mind Reading 9/ Example: Pick 3 T H R E E F I V E Example: 5 N I N E Pick a Number on the Clock Beginning at 1, Spell the Number around the Dial Continue to spell the Number that you landed on around the Dial Omit 11 and 1 from the clock face Now continue to spell the Number that you landed on around the Dial Omit 9 and 2 from the clock face Example: 9 T H R E E Now continue to spell the Number that you last landed on around the Dial One more time spelling the number you last landed on around the Dial

Animations Slide Math-Magic: Mind Reading 10/ Pick a Number on the Clock Beginning at 1, Spell the Number around the Dial Continue to spell the Number that you landed on around the Dial Omit 11 and 1 from the clock face Now continue to spell the Number that you landed on around the Dial Omit 9 and 2 from the clock face Now continue to spell the Number that you last landed on around the Dial One more time spelling the number you last landed on around the Dial

Animations Slide Math-Magic: Mind Reading 11/ ONE TWO SIX TEN THREE SEVEN EIGHT FOUR FIVE NINE ELEVEN TWELVE 3 THREE5 EIGHT5 THREE5 5 FIVE4 NINE4 THREE5 4 6 EIGHT5 NINE4 THREE5 FOUR4 SIX3 18

Animations Slide Math-Magic: Mind Reading 12/28 1) Write your age on a piece of paper 2) Write my “lucky” number right under your age 3)Add the two numbers, your age and my “lucky” number 4)Cross out the left-most digit of the sum, and re-write it in the units column under the sum 5)Now, add the sum to the transplanted digit A MATTER OF AGE X 1 34

Animations Slide Math-Magic: Mind Reading 13/28 1) Write your age on a piece of paper 2) Write my “lucky” number right under your age 3)Add the two numbers, your age and my “lucky” number 4)Cross out the left-most digit of the sum, and re-write it in the units column under the sum 5)Now, add the sum to the transplanted digit A MATTER OF AGE X 1 27

Animations Slide Math-Magic: Mind Reading 14/ X ) Add my Lucky Number +90 2) Subtract ) Add 1 +1 NET AFFECT: Subtract 9 from AGE

Animations Slide Math-Magic: Mind Reading 15/ X ) Add my Lucky Number +78 2) Subtract ) Add 1 +1 NET AFFECT: Subtract 21 from AGE

Animations Slide Math-Magic: Mind Reading 16/28 1) Subtract 5 2) Multiply by 3 3)Square your result 4)Add the digits until your sum has only one digit 5)If your digit < 5, add 5 If your digit > 5, subtract 4 Choose an integer between 1 and 9. 6) Double your answer 7) Subtract 6 8) … A B C D E F G H I J K L M N O P Q R S T…

Animations Slide Math-Magic: Mind Reading 17/28 DENMARK

Animations Slide Math-Magic: Mind Reading 18/28 1) Subtract ) Multiply by )Square your result )Add the digits until your sum has only one digit 0 9 5)If your digit < 5, add 5 If your digit > 5, subtract 4 5 Choose an integer between 1 and 9. 6) Double your answer 10 7) Subtract 6 4 8) … A B C D E F D

Animations Slide Math-Magic: Mind Reading 19/28 1) Reverse the digitsabc 2)Subtract the smaller - cba number from the largerpqr (If result = 99, adjoin a 0 to the right) 3)Reverse the digits of your result + rqp 4)Add the result from step 2 to the reversed order result (step 3) wxyz Think of a 3-digit number. 5) wx = Page Number y = Line Number z = Word Number CHILDREN

Animations Slide Math-Magic: Mind Reading 20/28 a-1 b+9 c+10 1) Reverse the digits a-1 b+9 c+10 - c b a 2)Subtract the smaller - c b a number from the larger a-1-c 9 10-a+c (If result = 99, adjoin 0 to the rt) a-1-c 9 10-a+c 10-a+c 9 a-1-c 3)Reverse the digits of your result 10-a+c 9 a-1-c 4)Add the result from step 2 to the reversed order result (step 3) Think of a 3-digit number ) wx = Page Number y = Line Number z = Word Number abc

Animations Slide Math-Magic: Mind Reading 21/28 1)Start with your 3-digit number credit card pin number.abc 2) Enter it into calculator twice 3) Divide by 11 4) Divide by 13 5) Divide by your original 3-digit numberabc abcabc Good Luck (7), Bad Luck (13) 7

Animations Slide Math-Magic: Mind Reading 22/28 1)Write down your 3-digit telephone area code.abc 2) Enter it into calculator twice 3) Divide by 11 4) Divide by 7 5) Divide by your original 3-digit numberabc abcabc Good Luck (7), Bad Luck (13) 13

Animations Slide Math-Magic: Mind Reading 23/28 7 x 11 x 13 = 1001 abc x 1001 = abcabc abcabc abc = x 13 == x 7 == 13 abcabc 11 x 13 x abc abcabc 11 x 7 x abc There’s no such thing as luck

Animations Slide Math-Magic: Mind Reading 24/28 Pick one card from the hand of six cards shown below, just one, and REMEMBER it. Please concentrate!

Animations Slide Math-Magic: Mind Reading 25/28 Are you CONCENTRATING on the card you picked? I will now make your card disappear from the hand

Animations Slide Math-Magic: Mind Reading 26/28

Animations Slide Math-Magic: Mind Reading 27/28 First, the original hand of cards from which you picked one Now the second hand of cards

Animations Slide Math-Magic: Mind Reading 28/28 Please Picture me in your mind’s eye ! Mind Reading : An Exercise in Math-Magic for Ladies only