Subtraction with Regrouping: 645 − 256
Subtraction with Regrouping Calculator
What is 645 − 256?
Answer
645 − 256 =
389
With regrouping: 2 borrows — from the tens and the hundreds
| 5 | 13 | +10 | |
| 5 (was 5, now 15) | |||
| − | 2 | 5 | 6 |
| 3 | 8 | 9 |
Column by column: 645 − 256
- Ones: 5 is less than 6 — borrow 1 ten: tens 4 → 3; 15 − 6 = 9 — write 9.
- Tens: after borrowing, 3; 3 is less than 5 — borrow 1 hundred: hundreds 6 → 5; 13 − 5 = 8 — write 8.
- Hundreds: after borrowing, 5; 5 − 2 = 3 — write 3.
645 − 256 = 389
Second check: 645 − 389 = 256
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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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