When adding decimals by hand you must _____. A. Line up the decimals of the numbers then add from left-to-right. B. line up the decimals of the numbers then add from right-to-left. C. line up the numbers to the left then add from left-to-right. D. line up the numbers to the left then add from right-to-left.
The correct answer in this question is option B. To add decimals manually, first line up the numbers. Add from the right to the left column by column. Put the decimal point that is aligned with the decimal point of the problem.
