Final answer:
To subtract 12.02 from 9.99, align the decimal points and subtract the place values starting with the hundredths place. The answer is 2.03.
Step-by-step explanation:
To subtract 12.02 from 9.99, we align the decimal points and subtract the corresponding place values. Starting from the right, we have 2-9, which requires borrowing. So, we borrow 1 from the 12, making it 2-10. This gives us 12-9=3 in the hundredth place. In the tenths place, we have 0-9, again requiring borrowing. So, we borrow 1 from the 2, making it 1-10. This gives us 10-9=1 in the tenths place. Finally, in the ones place, we have 1-0, which is simply 1. Therefore, the answer is 2.03.
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