Saved Bookmarks
| 1. |
Squaring a 2-digit number ending in 1Take a 2-digit number ending in 1.Subtract 1 from the number.Square the difference.Add the difference twice to its square.Add 1.Example: 61 x 61Subtract 1:61 – 1 = 60Square the difference:60 × 60 = 3600Add the Difference Twice to its Square:3600 + 60 + 60 = 3720Add 1:3720 + 1 = 3721Now you will get! 61 × 61 = 3721 |
|
Answer» Read The above math tricks! |
|