Column Addition and Subtraction
🎬 Video Tutorial
(0:01) Column Addition and Column Subtraction: For large numbers, align digits vertically by place value, and start adding or subtracting from the rightmost column.(0:50) Carrying Over in Addition: When the sum in a column is more than one digit (e.g., 10 or 12), carry over the “1” to the next column.(2:06) Borrowing in Subtraction: When the top digit is smaller than the bottom digit in a column, borrow “1” from the next column.
📂 Revision Cards
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