Amazing 
Repeated subtraction 6174!

Slide1

Take a 4 digit number. (All digits different)

(2) Arrange its digits in descending order--- (a)

(3) Arrange its digits in ascending order---- (b)

(4) Find (a) - (b).

(5) Repeat the process.

What do you see?

Slide3

For example:

I am Taking 4 digit number         

9265 

Arrange in Descending order 

9652 

Arrange in Ascending order        

 2569 

Now subtract                   

9652-2569 = 7083

Repetition

Arrange in Descending order 

8730 

Arrange in Ascending order        

 0378 

Now subtract                 

8730 – 0378 = 8352 

Repetition

Arrange in Descending order 

8532 

Arrange in Ascending order         

2358 

Now subtract               

8532 – 2358 = 6174 

Repetition                      

(7641- 1467 = 6174!)

Arrange in Descending order 

7641 

Arrange in Ascending order        

1467 

Now subtract               

7641 – 1467 = 6174 

Slide4

For example:

I am Taking 4 digit number         

9265 

Arrange in Descending order 

9652 

Arrange in Ascending order        

2569 

Now subtract                  

9652-2569 = 7083

Repetition

Arrange in Descending order 

8730 

Arrange in Ascending order       

0378 

Now subtract                 

8730 – 0378 = 8352 

Repetition

Arrange in Descending order 

8532 

Arrange in Ascending order        

2358 

Now subtract              

8532 – 2358 = 6174 

Repetition (7641- 1467 = 6174!)

Arrange in Descending order 

7641 

Arrange in Ascending order         

1467 

Now subtract               

7641 – 1467 = 6174 

Slide5 

For example:

I am Taking 4 digit number         

4256 

Arrange in Descending order 

6542 

Arrange in Ascending order         

2456 

Now subtract           

6542-2456 = 4086

Repetition

Arrange in Descending order 

8640 

Arrange in Ascending order         

0468 

Now subtract         

8640 – 0468 = 8172 

Repetition

Arrange in Descending order 

8721 

Arrange in Ascending order         

1278 

Now subtract        

8721  – 1278 = 7443

Repetition

Arrange in Descending order 

7443 

Arrange in Ascending order         

3447 

Now subtract        

7443 – 3447 = 3996

Repetition

 Arrange in Descending order 

9963 

Arrange in Ascending order

3699 

Now subtract        

 9963 – 3699 = 6264 

Repetition

Arrange in Descending order   

6642 

Arrange in Ascending order

2466 

Now subtract         

6642 – 2466 = 4176 

Repetition (7641- 1467 = 6174!)

Arrange in Descending order   

7641 

Arrange in Ascending order

1467 

Now subtract         

7641 – 1467 = 6174 

Slide 6

For example:

I am Taking 4 digit number

5832

Arrange in Descending order         

8532 

Arrange in Ascending order

2358 

Now subtract            

8532-2358 = 6174

Repetition (7641- 1467 = 6174!)

Arrange in Descending order 

7641 

Arrange in Ascending order

1467 

Now subtract        

7641 – 1467 = 6174 

Slide7

For example:

I am Taking 4 digit number

6345 

Arrange in Descending order 

6543 

Arrange in Ascending order

3456 

Now subtract            

 6543-3456 = 3087

Repetition

Arrange in Descending order 

8730 

Arrange in Ascending order

0378 

Now subtract               

8730 – 0378 = 8352 

Repetition

Arrange in Descending order 

8532 

Arrange in Ascending order

2358 

Now subtract      

8532 – 2358 = 6174 

Repetition (7641- 1467 = 6174!)

Arrange in Descending order 

7641 

Arrange in Ascending order 1467 

Now subtract        

7641 – 1467 = 6174 

Slide 8

What do you see?

6174

Amazing!

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Multiplication tables 1 to 1000

FUN WITH MATHEMATICS
Multiplication tables- 1 to 1000

WATCH IT ON FLIPBOOK : CLICK HERE

Multiplication tables1 to 1000

Find (One‘s Place, Ten’s Place, Hundred’s Place Etc.,) 

Operators For The Table Which You Are Going To Find

Multiplication 12 to 20 tables 

Multiplication by single digit  splitting method 

 

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Mysterious count

 

Fun with Mathematics



1. The mysterious count- trick

2. Match stick count – odd or even game

3. opposite face of the dice

Slide2

Take a watch and ask someone to think of one of the hours on the dial 

then you take a pencil and start tapping the various hours on the dial. 

The person who is thinking of the hour should count the number of taps starting next from the (number) or hour he is thinking of.

When his count reaches 21 he should shout stop.

Now I will tell the hour which he is thinking of.

Slide 3

Take a watch and ask someone to think of one of the hours on the dial -- 8

then you take a pencil and start tapping the various hours on the dial. 

The person who is thinking of the hour should count the number of taps starting next from the (number) or hour he is thinking of.

 

When his count reaches 21 he should shout stop.

Now I will tell the hour which he is thinking of

It is 8

Slide4

Take a watch and ask someone to think of one of the hours on the dial -- 8

then you take a pencil and start tapping the various hours on the dial. 

The person who is thinking of the hour should count the number of taps starting next from the (number) or hour he is thinking of.

 

When his count reaches 21 he should shout stop.

Now I will tell the hour which he is thinking of

It is 8

Slide5

Take a watch and ask someone to think of one of the hours on the dial -- 5

then you take a pencil and start tapping the various hours on the dial. 

The person who is thinking of the hour should count the number of taps starting next from the (number) or hour he is thinking of.

 

When his count reaches 21 he should shout stop.

Now I will tell the hour which he is thinking of

It is 5

Slide6

First 8 taps any random order 

but the 9th tap should fall on the hour 12

            10th tap should fall on the hour 11 

            11th tap should fall on the hour 10 in an anti-clockwise

When he says stop -- He thought the hour of

If he thinks 12 then 12 + 9th  tap  you will get answer

If he thinks 11 then 11 + 10th tap

If he thinks 10, then 10 + 11th 

If he thinks 9 then 9 + 12th  tap 

If he thinks 8 then 8 + 13th tap

If he thinks 7, then 7 + 14th tap you will get answer

If he thinks 6 then 6 + 15th  tap 

If he thinks 5 then 5 + 16th tap

If he thinks 4, then 4 + 17th tap you will get answer

If he thinks 3 then 3 + 18th  tap 

If he thinks 2 then 2 + 19th tap

If he thinks 1, then 1 + 20th tap you will get answer

Slide7

Take 20 match boxes.

You take few match sticks ask another to take few match sticks

If he has taken odd number of match, add your match sticks that total come to an even number.

 If he has taken even number of match, add your match sticks that total come to an odd number.

Play a game & enjoy

Slide8

Your friends match stick count is odd so to make even how much you are  going to give to him?

That is 

5 + 1 = 6 (even);

 5 + 2 = 7 (odd); 

5 + 3 = 8 (even)

5 + 4 = 9 ( odd); 

5 + 5 = 10 ( even)

Now you take some Match sticks Ask your friend to make compensate with his match sticks.

Carry on to play the game and learn Odd & Even numbers

conclusion

Odd + odd = even

Odd + even = odd

Slide 9

Dice are special number cubes for which the following rule applies:

You  can  make  a  simple  number  cube  by  cutting,  folding  and  gluing Card board. 

This can be done in many ways. 

In the figure below you can see

 four cuttings that can be used to make cubes, with dots on the sides.

Which of the following shapes can be folded together to form a cube that obeys the rule that the sum  of opposite faces is 7? 

Note :

 The total number of dots on two opposite faces is always seven

Slide 10

Which of the following shapes can be folded together to form a cube that obeys the rule that the sum  of opposite faces is 7? 

Note : 

The total number of dots on two opposite faces is always seven 

Answer : 

ii & iii only satisfies the rule {1+6; 2+5;3+4}

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Find the correct word from the misspelt word - Mathematical terms

FUN WITH MATHEMATICS 

Find the correct word from the misspelt word

Note:- Mathematical terms only

To play the quiz : Click Here

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