Subtraction with Regrouping: 109 − 15
Subtraction with Regrouping Calculator
What is 109 − 15?
Answer
109 − 15 =
94
With regrouping: 1 borrow — from the hundreds
| 0 | +10 | ||
| 0 (was 0, now 10) | 9 | ||
| − | 1 | 5 | |
| 9 | 4 |
Column by column: 109 − 15
- Ones: 9 − 5 = 4 — write 4.
- Tens: 0 is less than 1 — borrow 1 hundred: hundreds 1 → 0; 10 − 1 = 9 — write 9.
- Hundreds: after borrowing, 0 — a leading zero is not written.
109 − 15 = 94
Second check: 109 − 94 = 15
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See Also
- Addition with Regrouping Calculator - Column addition step by step, with every carry
- Long Division Calculator - Step-by-step long division with detailed explanation
- Long Multiplication Calculator - Column multiplication with partial products, step by step
- Subtracting Fractions Calculator - Subtract fractions, mixed numbers and whole numbers step by step
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