ACT Math : How to square a decimal
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Example Question #1 : Basic Squaring / Square Roots
Find the square of 
Squaring a decimal is identical to multiplying decimals.
Drop the decimal, multiply the number by its self, and then add up the decimal points in the original problem and put it back into your answer.
Example Question #1 : How To Square A Decimal
What is 
You can solve this on your calculator, or think about it as a fraction 
Example Question #1 : How To Square A Decimal
If 
First, we must figure out what 
We do 
Now to find out what 
We move our decimal points over so that we are dealing with only whole numbers. This gives us 
Finally, we count how many spaces we moved our decimals in total, and we move the decimal in our answer back that many spaces. To get from 
Therefore, we must take 
Example Question #1 : How To Square A Decimal
Evaluate the following:
To solve, simply multiply 0.02 by 0.02 as though the numbers are without decimals.
Then, sum the number of spaces to the right of the decimal points in your problem and include that many in your answer.
Thus, your answer is .0004.
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