1. SN Multiplication Without a Calculator
Multiply the non-exponent numbers
Add the exponents of ten
Example: (3 x 105)(2 x 106) =6 x 1011
Try: (4x103)(2x105) = (4x108)(5x10-2) = (1x10-2)(3x10-6) =

2. SN Division without a Calculator
Divide first coefficient by second coefficient
Subtract second exponent from first Example: (4x102)/(2x106) = 2x Try: (6x108)/(2x103) = (9x105)/(3x102) =

3. SN Addition & Subtraction without a Calculator
Change number with the lowest exponent so they have the same exponent of ten
Add or subtract the coefficients, keep the same exponent. Example: (3.76x104)+(5.5x102)= (3.76x104)+(0.055x104)= 3.82x104

4. Practice Addition & Subtraction
(4.8x105) – (9.7x104) =
(9.39x105) + (8x103) =
(3x10-6) – (2x10-7) =

5. Using a Graphing Calculator
Use the EE button to enter an exponent, NOT the ^ key
To enter a negative exponent, use the (- ) key after the EE and before the exponent
Never write an answer as 5.0e16!

6. Practice operations with Scientific Notation and Sig Figs
(See Homework worksheet)