<PRE><B>Question 876676</B>
8 x 10 to the 11th power -  6 X 10 to the 10th power
--------
Use * for multiply, x has other uses
Use ^ (Shift 6) for exponents
8*10^11 -  6*10^10
Or
8e11 - 6e10
The exponents have to match to add or subtract.
= 8e11 - 0.6e11
= 7.4e11
= {{{7.4*10^11}}}</PRE>