Subtraction with Regrouping: 551 − 149

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 551 − 149?

Answer

551 − 149 =
402

With regrouping: 1 borrow — from the tens

551 − 149 in a column. Above the columns: the values after borrowing — a crossed-out digit is replaced by the number above it; +10 marks a column that received a borrowed ten.
4+10
5 5(was 5, now 4)1 (was 1, now 11)
−149
402

Column by column: 551 − 149

  • Ones: 1 is less than 9 — borrow 1 ten: tens 5 → 4; 11 − 9 = 2 — write 2.
  • Tens: after borrowing, 4; 4 − 4 = 0 — write 0.
  • Hundreds: 5 − 1 = 4 — write 4.

551 − 149 = 402

Second check: 551 − 402 = 149

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Column subtractions of 149

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405 − 149256
417 − 149268
440 − 149291
456 − 149307
474 − 149325
497 − 149348
500 − 149351
503 − 149354
525 − 149376
538 − 149389
551 − 149402
576 − 149427
600 − 149451
602 − 149453
617 − 149468
634 − 149485
668 − 149519
685 − 149536
713 − 149564
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FAQ

What is 551 − 149?

551 − 149 = 402

How do you check that 551 − 149 = 402?

Add the difference and the subtrahend: 402 + 149 = 551. Getting the minuend back means the difference is right.

How many times do you borrow in 551 − 149?

1 borrow: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.

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