Posted by sara on .
If a= 9990.9 and b= 9886.1. First, convert these to scientific notation. If only three significant digits are allowed in decimal portion (mantisa) of the scientific notation and chopping and not rounding is used, what is ab?

simple math 
PsyDAG,
a = 9.9909 * 10^3
b = 9.8861 * 10^3
Chopping and not rounding
a = 9.990 * 10^3
b = 9.886 * 10^3
(9.9909.886) * 10^3 = ?