Subtraction with Regrouping: 645 − 291
Subtraction with Regrouping Calculator
What is 645 − 291?
Answer
645 − 291 =
354
With regrouping: 1 borrow — from the hundreds
| 5 | +10 | ||
| 4 (was 4, now 14) | 5 | ||
| − | 2 | 9 | 1 |
| 3 | 5 | 4 |
Column by column: 645 − 291
- Ones: 5 − 1 = 4 — write 4.
- Tens: 4 is less than 9 — borrow 1 hundred: hundreds 6 → 5; 14 − 9 = 5 — write 5.
- Hundreds: after borrowing, 5; 5 − 2 = 3 — write 3.
645 − 291 = 354
Second check: 645 − 354 = 291
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- 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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