Question

Subtract the two numbers, then estimate to see if the answer is reasonable.

9.3-8.09
The exact difference is
(Type an integer or a decimal.)
possible
C
OA. The estimated difference is
OB. The estimated difference is
Estimate to see if the answer is reasonable. Round each of the given numbers to the
nearest integer, then subtract. Select the correct choice below and, if necessary, fill in
the answer box to complete your choice.
Thus, the answer is not reasonable.
Thus, the answer is reasonable.

Answer 1

To subtract 9.3 and 8.09, we align the decimal points and subtract each place value. The exact difference is 1.21. To estimate the difference, we round each number to the nearest integer and subtract. The estimation of 1 is close to the exact difference.

Step-by-step explanation:

To subtract the two numbers, 9.3 and 8.09, we simply align the decimal points and subtract each place value. In this case, the tenths and the hundredths places. Subtracting the tenth value, 3 - 0, gives us 3. Subtracting the hundredth value, 0 - 9, requires borrowing from the tenths place, resulting in 10 - 9 = 1. So the exact difference is 1.21.

To estimate if the answer is reasonable, we can round each number to the nearest integer. 9.3 rounds to 9 and 8.09 rounds to 8. Subtracting these rounded numbers, 9 - 8 = 1. Since this estimation is very close to the exact difference of 1.21, we can conclude that the answer is reasonable.

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