Date Of Birth Magic

 Fun With Mathematics
Date of birth magic

Slide2

Calendar

Think date and Month of birth (DD/MM)

Multiply Month by 5

Add +6

Multiply by 4

Add +9

multiply by 5

Add date of birth

Now tell the answer you got

I can tell your Date and Month of the birth

Slide3

How?

Slide4

Calendar

Think date and Month of birth (DD/MM)    

05/04

Multiply Month by 5                                    

04 x 5 = 20

Add +6                                                           

20 + 06 = 26

Multiply by 4                                                   
26 x 4 = 104

Add +9                                                               

104 + 9 = 113

multiply by 5                                         

113 x 5 = 565

Add date of birth                                   

565 + 05 = 570

Now tell the answer you got                                    

570

I can tell your Date and Month of the birth

Answer :

Date is 05

Month is 04

How?

Slide 5

How?

Subtract 165 from the number told

thats it

If you get 4 digit number then answer is first 2 digit is Month and Last 2 digit is Date.

If you get 3 digit number then answer is first 1 digit is Month and Last 2 digit is Date.

From the above example

Number said is 570

So,

570 - 165 = 405 

Here 4 is April Month & 5 is Date.

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Calendar Magic 153

 Fun with mathematics
Calendar Magic 153

Slide1

Total 153!

This Mathematics activity gives you interest to do the fundamental operations. (+, -, x, /)

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FUN ACTIVITY – Total 153!

Ask a friend to choose any    3 x 3 grid on a calendar month and draw a box around it.

Tell  your friend that you can instantly give the total of all the nine numbers in the box. 

How ???????

Slide4

How ????

Answer is 153

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FUN ACTIVITY - solutions

Take the smallest number in the square and add 8 to it. In this example, 9 + 8 =  17

Multiply that answer by nine. 

So 17 x 9 = 153 

Ask your numbers friend to check 

by actually taking the total of all nine numbers.

9 + 10 + 11 + 16 + 17 + 18+ 23 + 24 + 25 = 153 

Slide6

Try this out with another box of nine numbers.

This works for any month of any year.

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Calculator Magic

 FUN WITH MATHEMATICS
CALCULATOR MAGIC

Slide2

In Calculator

Enter 4 digit number

Add the 4 digits (this could be mind calculation)

Then subtract the above sum from the typed first 4 digit number 

Now Tell me the other 3 digits

Think any one number of the 4 digits

I can tell the Answer

How....????

Slide3

Example

In Calculator

Enter 4 digit number                                                             

4768

Add the 4 digits (this could be mind calculation)    

 4+6+7+8 =25

Then subtract the above sum from the typed first 4 digit number    

 4768 – 25 = 4743

Think any one number of the 4 digits                                   

 7

Now Tell me the other 3 digits                                                     

4 4 3

I can tell the Answer                                                     

7

How....????

Slide4

How....????

Slide5

How....????

ADD THE DIGITS and subtract from the 9 

4+4+3=11

1+1=2

 9 – 2 =7

the result is thinking OF number

IN THIS EXAMPLE 7

Slide6

FUN WITH MATHEMATICS

CALCULATOR MAGIC 2

Slide7

Just tell me your favorite number FROM 1 TO 9

I can tell the Answer Before you multiplying and proceeding the procedure 

If your favorite number is 1 then answer is 111111111

If your favorite number is 2 then answer is 222222222

If your favorite number is 3 then answer is 333333333

If your favorite number is 4 then answer is 444444444

If your favorite number is 5 then answer is 555555555

If your favorite number is 6 then answer is 666666666

If your favorite number is 7 then answer is 777777777

If your favorite number is 8 then answer is 88888888

If your favorite number is 9 then answer is 99999999

How?????

How....????

Slide8

How....????procedure

tell any favorite number from 1 to 9

example

3

multiply with 9                                

3 x 9 =27

then multiply with                                               

12345679 x 27 

the result is

IN THIS EXAMPLE                                         

333333333

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5 Digit Number Magic

5 Digit number Difference magic

Slide2

Write a five digit number. 

Reverse it. 

Subtract (smaller from the bigger) 

score out any one of five digits in the difference. 

Tell the remaining digits in any order. 

The scored out digit is given immediately.

How…???

Slide 3

For Example:

Write a 5 digit number -- 59264

Reverse it --- 46295

Subtract it from bigger - 12969

Let the digit scored out be 6.

The remaining digits are 1, 2, 9, 9

Tell the remaining digits in any order. 

The scored out digit is given immediately. 

It is 6

How…???

Slide4

How…???

Slide5

Find the total of 1, 2, 9 and 9. 

It is 21.

If we add 6, it is divisible by 9. Hence the scored out digit is 6.

[ if 0 or 9 is scored out, we can say either 0 or 9 ]

Slide6

For Example:

Write a 5 digit number -- 34506

Reverse it --- 60543

Subtract it from bigger - 26037

Let the digit scored out be 0.

The remaining digits are 2, 6, 3, 7

Tell the remaining digits in any order. 

The scored out digit is given immediately. 

It is 0

How…???

Slide7

Find the total of 2, 6, 3 and 7. 

It is 18.

If we add 0, it is divisible by 9. Hence the scored out digit is 0.

[ if 0 or 9 is scored out, we can say either 0 or 9 ]

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Thank You🙏🏻

Watch it on youtube : Click here
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