Subtraction with Regrouping: 721 − 74
Subtraction with Regrouping Calculator
What is 721 − 74?
Answer
721 − 74 =
647
With regrouping: 2 borrows — from the tens and the hundreds
| 6 | 11 | +10 | |
| 1 (was 1, now 11) | |||
| − | 7 | 4 | |
| 6 | 4 | 7 |
Column by column: 721 − 74
- Ones: 1 is less than 4 — borrow 1 ten: tens 2 → 1; 11 − 4 = 7 — write 7.
- Tens: after borrowing, 1; 1 is less than 7 — borrow 1 hundred: hundreds 7 → 6; 11 − 7 = 4 — write 4.
- Hundreds: after borrowing, 6; nothing to subtract — write 6.
721 − 74 = 647
Second check: 721 − 647 = 74
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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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