4.05 x10 to the third power is 4,050
The decimal form of 7.73 times 10 to the negative third power is 0.00773
4.05 times 10 to the third power = 40.5
example 0.0081 the exponential form is (8 times 1/10 raise to the third power)+(1 times 1/10 raise to the fourth power)
6.5 x 10^6
Ten to the negative sixth power in decimal form is 0.000001