Scientific Notation is a method of writing numbers that are either very large or very small. This is done using powers of 10. For example, 2.0 x 10 to the 3rd power; the 1st number must be a number between 1 and 10(not including 10)
Examples:
340000000 = 3.4 x 10 to the 8th power
7800000000 = 7.8 x 10 to the 9th power
0.00000023 = 2.3 x 10 to the -7 power.
1) Identify the number
2) Move the decimal place over as many times to make the number between one and 10 in front of the decimal. You can either move it right or move it left depending on whether the number is large or small.
3) The number of spaces that the decimal was moved is the exponent which goes in the top right corner after the 10.
http://www.youtube.com/watch?v=H578qUeoBC0
Unitary Rates:
Start with one unit and convert it by using the conversion factor.
If it requires more than one step go back to 10 to the power of 0 grams or litres.
Ex. 76.6 mL into L
= 1000 mL = 1 L
= 76.6 mL/ 1000 =(y) L
= 0.0766 L
No comments:
Post a Comment