What's the best way to square a large number? (That I can remember)

Question

anonymous · Answer

Use a calculator

anonymous · Answer

Let me see... best way to square
I am going to tell you a method you will never forget ...
Multiply the no. to itself

anonymous · Answer

Examples:

1. You can approximately get a range for the answer by seeing that 576 lies between 400 and 900(whose sq roots are 20 and 30).
 2. Now that we know that the answer is between 20 and 30, try to see what number should be in the units place to get a 6(576) in the product with itself. Either a 4 or 6 wd do that. So possible answers are 24 or 26.
 3. At this time you verify one by multiplying 24x24 to verify 

OR

1. Write down the factors of 576 and and see if they share the same with the choices. For eg, if you see 25 and 26, you can tell that there is no factor of 5 or 13 in 576 and eliminate them!

anonymous · Answer

Although, as life is a dangerous game, you might get wrong answers with pen-paer sometimes, so better to use a calculator

lifeisadangerousgame · Answer

Thanks guys! Hey Jackie could you show me an example of what yo usaid?