Numbers ending with 1 trick

 When you are asked with some calculations on of a sudden it is sometimes difficult to say but it is not always that we can't say in such situations these tricks will be helpful for quick solving of calculations with mind.

In this promotion of simple tricks this is the second on among those The trick which goes on Numbers ending with 1 ( the numbers whose unit digits are 1)

Ex: 21 x 21

If I would have asked you the 11 x 11 = ? then you would have quickly responded without a delay If you have studies my previous blog. No problem though here we go with the trick.

11 x 11 =121

21 x 21=441

31 x 31=961

41 x 41=???

51 x 51=???

Did you get the trick...., If yes very good, If no still good because we will learn it now. 

see the pictures give below to know it easily.

Step1:

We take the first ( ten's place digits) and then 

Step2:

We multiply them and keep it as a 1st digit of your answer here in this case it is 9

Step 3:

We add the ten's place digits here in this case 3 in the question and place the result (6) as the second digit of your answer. Your first digit will be the result of step 2 which is 9 in this case and the second digit will be 6. 

Step 4: 

Keep the last digit as 1 only

Now above picture shows us the case where we get two digit when we add 

Here we added the ten's place digits which are 5 on adding we got result as 10

now , what we do is that carry forward that 1 in 10 to 25 ( which we got after multiplying)

so, it becomes 26 and remaining 0 as the next digit (see the picture)

If you still have a doubt see the video below

Now it holds for any other numbers also for instance check the below picture and understand

In here we have taken 151 x 31 here we got to see that 15x 3 is 45

and 15+3 is 18 so on taking 1 as carry forward to 45 we get 46 and 

left out 8 after 46 and as usual last 1

then we get 4681 as the result you can check that in calculator if you want

you can verify all these

click this to-------> "CHECK OUT WHAT YOU HAVE LEARNT"

after that click back to return this page again.