Multi-Digit Addition and Subtraction

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Multi-digit addition is the process of adding numbers that have more than one digit, aligning them by place value.

Multi-digit subtraction is the process of subtracting numbers that have more than one digit, aligning them by place value.

Place value helps in correctly aligning numbers to ensure accurate addition or subtraction.

A common strategy is to stack the numbers vertically and add starting from the rightmost digit, carrying over if necessary.

A common strategy is to stack the numbers vertically and subtract starting from the rightmost digit, borrowing if necessary.