Operation
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Learn carry addition step by step
➕ Learn carry addition with a board, carries and clear steps. Solve and Practice modes, difficulty-based exercises, check answers and view solution.
Learn Addition with Carrying (Step by Step)
Add 2 or more numbers with decimals. Visualize the operation on a column board, see the carries, and practice solving each step yourself.
Result
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Enter the addends or practice on the board. In Practice mode, complete the board without seeing the final result.
The board will appear here. Press “=” to see the column addition.
Errors: 0
Streak: 0
PERFECT
Press “Generate exercise” to set up an addition and then practice step by step.
Step 0/0
How to add with carrying (column method)
- Align the decimal separator. Place the numbers so the decimals line up in the same column. If a decimal is missing, it equals 0.
- Start from the right. Add the units column (or the last decimal) including the previous carry.
- Write the last digit. From the total sum, write the units digit on the result row.
- Carry the rest. The remaining tens, hundreds, etc. are written as a carry above the next column to the left.
- Repeat column by column. Continue to the left until you finish. If a carry remains at the end, add it to the beginning of the result.
Enter positive numbers (0 or higher). Comma or dot decimals are allowed.
Frequently asked questions
“Carrying” means saving the part of the sum that doesn’t fit in a single digit and adding it to the next column. For example, 8 + 7 = 15: write 5 and carry 1.
Yes. In Solve, press “+” to add addends. In Practice, choose 2–5 addends in the selector and generate the exercise.
Align the decimal separators and add by columns just like with whole numbers. If a number has fewer decimals, fill the missing places with zeros (for example, 1.2 = 1.20).
The color helps distinguish carries from the rest of the numbers, so you can see where you transported units.
Go to “Practice” → “Generate exercise”. Fill in column by column; checking is automatic as you type and you move through columns without a “Check” button.
