Upcoming SlideShare
×

# Squares of Numbers ending in 5

21,778 views

Published on

Vedic Maths

Published in: Technology, Education
6 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total views
21,778
On SlideShare
0
From Embeds
0
Number of Embeds
6,871
Actions
Shares
0
246
0
Likes
6
Embeds 0
No embeds

No notes for slide

### Squares of Numbers ending in 5

1. 1. How to find Squares of Numbers ending in 5 in less than 3 seconds? 35 2 45 2 85 2 etc.
2. 2. Lets take for example 35 35 x
3. 3. Here we see that 35 35 x That the Units place adds upto 5+5 = 10 and that the Ten’s place is same.
4. 4. When this is true what we do is 35 35 x Apply the Word Formulae ‘ By one more than the One before” to the ten’s place. So Whats 1 more than 3?. It is 4. So we multiply 3 with 4 to get 12. That’s the first part of our answer. 12
5. 5. To get the second part of our answer 35 35 x We multiply 5 with 5 to get 25. That’s the second part of our answer. So our answer becomes 1225. 1225
6. 6. Now try 85 85 x
7. 7. Solution 85 85 x 7225 We multiply 5 with 5 to get 25. And multiply 8 with the next number 9 to get 72. So our answer becomes 7225. Simple.
8. 8. Now try 45 2 55 2 65 2 95 2 105 2 125 2 etc. in the same way.
9. 9. Now what do we do for these sums? 26 24 x 48 42 x 67 63 x
10. 10. Now what do we do for these sums? 26 24 x 48 42 x 67 63 x
11. 11. Note that the units add upto 10 and the tens place is same. So we can apply the same rule “ By one more than the One before” . Lets see what we get. 26 24 x 48 42 x 67 63 x
12. 12. In 48 x 42 we have 4 multiplied with the next number 5 which gives us 20 and 8 x2 which gives us 16. Therefore our answer 2016. Similarly try the other sums. 26 24 x 48 42 x 67 63 x 6|24 20|16 42|21