1) What do the following mean?(i.e.write as a number)

106     103     10-2     10-22

(enter each in your calculator)

Answer

2) Write each of the following as a number and enter in your calculator.

 3.65 X 102  1.23 X 10-4  120 X 10-6  0.023 X 106

3) Calculate the following in your head.

 10-4 X 1023  103/10-6  (10-2 X 10-7)/(105 X 102)

4) Perform the following calculations on your calculator. Express answer in scientific notation with proper number of significant figures.

 1.05 X 10-3 + 2.48 X 10-2

 5.00 X (16.0/4.00) X (8.00/4.00) X (8.00/0.500) X (365/12.0)

(0.0821)(22.5 + 273.0)/(725/760.)(10.5 X 10-3)