Subtraction with Regrouping: 938 − 291

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 938 − 291?

Answer

938 − 291 =
647

With regrouping: 1 borrow — from the hundreds

938 − 291 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.
8+10
9(was 9, now 8)3 (was 3, now 13)8
−291
647

Column by column: 938 − 291

  • Ones: 8 − 1 = 7 — write 7.
  • Tens: 3 is less than 9 — borrow 1 hundred: hundreds 9 → 8; 13 − 9 = 4 — write 4.
  • Hundreds: after borrowing, 8; 8 − 2 = 6 — write 6.

938 − 291 = 647

Second check: 938 − 647 = 291

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582 − 291291
598 − 291307
616 − 291325
639 − 291348
645 − 291354
667 − 291376
680 − 291389
693 − 291402
718 − 291427
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759 − 291468
776 − 291485
810 − 291519
827 − 291536
855 − 291564
869 − 291578
893 − 291602
938 − 291647
974 − 291683

FAQ

What is 938 − 291?

938 − 291 = 647

How do you check that 938 − 291 = 647?

Add the difference and the subtrahend: 647 + 291 = 938. Getting the minuend back means the difference is right.

How many times do you borrow in 938 − 291?

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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