Standard Notation:
7,800,000,000
Scientific Notation:
7.8 x 109
780000000
7.8 billion = 7,800,000,000
7,800,000
It is: 7.8*101
0.078
6,078,000,000
78 kilowatts in Scientific Notation = 7.8 x 101kilowatts.
78/1.06 = 7800/106 = 3900/53
78 tens
The ratio of .78 is 78/100 because that is decimal notation converted to a fraction. They both mean the same thing.
7.8 = 78/10 which can be simplified if you so wish.
3 and 78 = 81.
78 billion dollars