2 ones = 2 and 2 is a decimal number. You do not need to put a point after it and it would be inappropriate to write it as 2.0 since that would imply a level of accuracy that is not warranted.
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2 ones = 2, 5 hundredths = 0.05, 2.05
9.002
It is 2.05
0.99
7 ones and 90 tenths written as a decimal is the same as 7 ones and 9 ones written as a decimal, so the answer is 16.0