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How It Works
Traditional addition lines up two numbers by place value and adds digits column by column from right to left. When a column totals more than 9, you write the ones digit and carry the tens digit to the next column. This calculator shows every carry so you can follow each step.
Example Problem
Add 2,314 + 157:
- Ones column: 4 + 7 = 11. Write 1, carry 1.
- Tens column: 1 + 5 + 1 (carry) = 7. Write 7.
- Hundreds column: 3 + 1 = 4. Write 4.
- Thousands column: 2 + 0 = 2. Write 2.
Result: 2,471
Frequently Asked Questions
How to add large numbers step by step?
Write the numbers vertically so each place value lines up. Add column by column starting from the rightmost digit. If the sum exceeds 9, carry the extra digit to the next column. For example, 4,586 + 3,927 = 8,513.
What is a carry-over in addition?
A carry-over happens when the sum of a column is 10 or more. The ones digit stays in that column and the tens digit is added to the next column to the left. In 8 + 7 = 15, you write 5 and carry 1.
Can you add decimals with the traditional method?
Yes. Line up the decimal points so that tenths align with tenths, hundredths with hundredths, and so on. Then add column by column exactly as you would with whole numbers.
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