This question asks for a number or a calculation You can enter whole numbers negative numbers or decimal numbers If you enter a decimal value be sure to give at least 3 decimal places Alternatively you can enter mathematical expressions Some examples Enter To get sqrt 4 2 5 3 Enter 5 V 2 Enter 3 2 3 9 log 100 log 100 2 Enter 4 2 2 Note that for functions like log and sqrt you must use parentheses log 100 is good but log100 and log 100 will not work Try it here Use the Preview button to see how the computer is interpreting what you typed 7100 5 3 3 1 2 5