1,200
To write the numbers 168 thousand 15 hundreds into a number, it would be 169,500. There is another ways to write it depending on if you want decimals, 168,00.15.
8300 If as i suspect, you meant 83 hundredths, this would be 83/100 which would be 0.83
You would write it as 1,300,500 or 1 300 500
120
2 of them.
120
Two of them
Expressed in figures, this is equal to 1,700,000.
120 = 120.0 or 120%
Sixty hundreds = 6,000
Hundreds and hundreds are the same thing. If you are looking for this number in figures, this would be equal to 3,000 - more commonly pronounced three thousand.