Simplify: 
1)  Write the following numbers in order from greatest to least:
320000000  ,  5.2x10^{5}  , and  

2)  Write the following numbers in order from greatest to least:

3)  Write the following numbers in order from greatest to least:
2.4x10^{5}  ,   , and  2.2x10^{1} 

4)  Write the following numbers in order from least to greatest:
4.4x10^{1}  ,  350000  , and  8x10^{0} 

5)  Write the following numbers in order from least to greatest:
 ,   , and  

6)  Write the following numbers in order from least to greatest:
2400000  ,  200000  , and  420000 
