1. Mind Reading

2. Take away the number you thought1
Think of a number, ANY number.
Write it down somewhere.
Add 10
Multiply by 2
Take away 6
Halve your answer
Take away the number you thought
of…

3. I’ll bet my entire years wage that
your answer is… 7

4. 2 Pick a whole number from 1 to 10 Multiply it by 4 Add 20 Halve it
Take away 2
Halve again
Take away the number you first thought of

5. You should have a number in your head.
Convert it to a letter,
1 = A, 10 = J, 19 = S
2 = B, 11 = K, 20 = T
3 = C, 12 = L, 21 = U
4 = D, 13 = M, 22 = V
5 = E, 14 = N, 23 = W
6 = F, 15 = O, 24 = X
7 = G, 16 = P, 25 = Y
8 = H, 17 = Q, 26 = Z
9 = I, 18 = R,

6. Think of a COUNTRY starting with the letter you
have.
Think of an ANIMAL starting with the SECOND
letter of your country.
Think of the COLOUR of that animal.

7. Did you think of….
from ?
Obviously not everyone will get the same as this as there are more countries than Denmark beginning with D and even if they pick Denmark more animals than Elephant begin with the letter E, however you can premise this trick with a prediction that it will only work for about 70% of the class. It does require some cultural literacy (to coin an ED Hirsch phrase!)

8. 3 Start with the month of your birth Add 18 Multiply by 25
(Jan = 1, Feb = 2, Mar = 3, Apr = 4, May = 5, Jun = 6
Jul = 7, Aug = 8, Sept = 9, Oct = 10, Nov = 11, Dec = 12)
Add 18
Multiply by 25
Subtract 333
Multiply by 8
Subtract 554

9. Halve your answer
Add the day of your birth
Multiply by 5
Add 692
Multiply by 20
Add the last 2 digits of your birth year
Subtract 32940

10. 4 Write down ANY 3 or 4 digit number
Make another number using your digits
(For example if you chose 1234 you could get 4213)
You now have 2 numbers. Subtract the
smallest from the largest
You now have another number.
put a ring around ONE of the digits –
don’t choose a 0 as that already has
a ring around it.

11. Not including the digit you have put
a ring around, write down any number
made up of the digits you have left.
For example if you ended up with 4059, you don’t use the
0 but you could put a ring around the 5. This leaves you
With 4, 0 and 9 so you could write down 409, 490, ,
49, 94
Tell me this number and I can guess
which digit you put a ring around!
The key to this is multiples of 9 – whatever number they tell you, add the digits together. The number they put a ring round is whichever number you have to add to get to the NEXT multiple of 9. So 409 = = 13. Next multiple of 9 is 18 which is 5 away – hence the number they put a ring around.

12. 5 Put a ring around ANY number in this grid
For example the number 11
Whichever number you chose, cross
out ALL the numbers in the same
column and row.
For this trick you need to write down the answer in advance (maybe in an envelope) and give it to someone for safe-keeping and open it at the end. The key is the diagonal – the answer, whatever size grid you use, will be the sum of the numbers in either diagonal.
This trick works with any square grid numbered from one to n squared. (I have produced 4 by 4, 5 by 5 and 6 by 6 grids which you can use if you wish with the students – just download them).
Pick another number not crossed out
or ringed and repeat the process.
Repeat until there are no
numbers left

13. 6 Pick ANY two digit number (i.e. from 10 to 99)
Add its two digits together.
(Eg. if it is 25, = 7)
Take your answer away from your two digit number.
Now look at the symbol above your answer on the
next slide and study it hard.
I am going to try and read your mind!

16. Pick ANY two digit number (i.e. from 10 to 99)
Add its two digits together.
(Eg. if it is 25, = 7)
Take your answer away from your two digit number.
Now look at the symbol above your answer on the
next slide and study it hard.
I am going to try and read your mind!

19. Pick ANY two digit number (i.e. from 10 to 99)
Add its two digits together.
(Eg. if it is 25, = 7)
Take your answer away from your two digit number.
Now look at the symbol above your answer on the
next slide and study it hard.
I am going to try and read your mind!

22. Pick ANY two digit number (i.e. from 10 to 99)
Add its two digits together.
(Eg. if it is 25, = 7)
Take your answer away from your two digit number.
Now look at the symbol above your answer on the
next slide and study it hard.
I am going to try and read your mind!