Try this calculator if the other one doesn't work. The buttons are in different places but it works
Quantities with exponents can be tedious to write out. Luckily there are shortcuts. This section looks at both methods.
Target 1: Use rules of exponents to simplify expressions
Target 2: Use rules of exponents to simplify 0 and negative exponents
Target 3: Use rules of exponents to simplify fractional exponents
Here are the links for the online discussion forum for this topic. Make sure you participate as your participation goes in as an assessment grade.
IM3 Forum Link
IM3 Honors Forum Link