2.1 - Scientific Notation. Scientific Notation. Numbers that are extremely large can be difficult to deal with… sooo Scientists convert these numbers into scientific notation Scientific notation expresses numbers as a multiple of two factors:
A proton’s mass =0.0000000000000000000000000017262 kg
If you put it in scientific notation, the mass of a proton is expressed as 1.7262 x 10-27 kg
When numbers larger than 1 are expressed in scientific notation, the power of ten is positive
When numbers smaller than 1 are expressed in scientific notation, the power of ten is negative
Convert 1,392,000 to scientific notation.
= 1.392 x 106
Convert 0.000,000,028 to scientific notation.
= 2.8 x 10-8
7.35 x 102 + 2.43 x 102 = 9.78 x 102
Tokyo pop: 2.70 x 107
Mexico City pop: 15.6 x 106 = 1.56 x 107
Sao Paolo pop: 0.165 x 108 = 1.65 x 107
NOW you can add them together and carry thru the exponent
Total= 5.91 x 107