Subtraction with Regrouping: 24,690 − 12,345

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 24,690 − 12,345?

Answer

24,690 − 12,345 =
12,345

With regrouping: 1 borrow — from the tens

24,690 − 12,345 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
2 4 6 9(was 9, now 8)0 (was 0, now 10)
−12345
12345

Column by column: 24,690 − 12,345

  • Ones: 0 is less than 5 — borrow 1 ten: tens 9 → 8; 10 − 5 = 5 — write 5.
  • Tens: after borrowing, 8; 8 − 4 = 4 — write 4.
  • Hundreds: 6 − 3 = 3 — write 3.
  • Thousands: 4 − 2 = 2 — write 2.
  • Ten thousands: 2 − 1 = 1 — write 1.

24,690 − 12,345 = 12,345

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Column subtractions of 12,345

ExampleDifference
24,685 − 12,34512,340
24,686 − 12,34512,341
24,687 − 12,34512,342
24,688 − 12,34512,343
24,689 − 12,34512,344
24,690 − 12,34512,345
24,691 − 12,34512,346
24,692 − 12,34512,347
24,693 − 12,34512,348
24,694 − 12,34512,349
24,695 − 12,34512,350

FAQ

What is 24,690 − 12,345?

24,690 − 12,345 = 12,345

How do you check that 24,690 − 12,345 = 12,345?

Add the difference and the subtrahend: 12,345 + 12,345 = 24,690. Getting the minuend back means the difference is right.

How many times do you borrow in 24,690 − 12,345?

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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