\label{Numerical_Response_Format}
You can format the number displayed by the computer as the
answer. For instance, if the answer is one-third, the computer will display
that it computed {}``.333333333'' as the answer. If you'd like to shorten
that, you can use the \textbf{Format} field. Format strings like {}``2E''
(without the quotes) will display three significant digits in scientific
notation. Format strings like {}``2f'' will display two digits after the
decimal point. Format strings like {}``2s'' will round a number to 
2 significant digits.