Which one would you choose a 12 pack of Mountain Dew or a 1 liter. This ordeal can be conquered if you use common sense and math to help you.  A 12 pack of Mountain Dew costs $12.99.
  A liter costs $1.50. First you have to use common sense to find out whats in you pocket. You find that you only have so much to spend you should just go with the liter. You have a lot of money you should buy the 12 pack.
 
Last semester in math I remember the most was scientific notation. It was something new for me. It was kind of hard at first but when I got used to it. We had to move the decimal behind the first 2 numbers. We had to get rid of the zeros that came behind the last of the numbers. 
Next we had to multiply the number that has the decimal in it by 10 and power it by how many times we had to move the decimal back to its original spot. For example: 235000000 move the decimal behind the two.