Answer :
To calculate the sum, align the decimal points and perform addition. The result is 39.3372.
To calculate the sum of 35.4272 and 3.91 to the appropriate accuracy, you need to consider the number of decimal places in both numbers and perform the addition.
Align the decimal points of the two numbers, so that the digits in each place value line up.
Add each column of numbers, starting from the rightmost column.
Carry over any extra to the next column, if necessary.
The sum of 35.4272 and 3.91 is 39.3372, rounded to the appropriate accuracy.
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