Subtraction with Regrouping: 31,498 − 8,042

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 31,498 − 8,042?

Answer

31,498 − 8,042 =
23,456

With regrouping: 1 borrow — from the ten thousands

31,498 − 8,042 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.
2+10
3(was 3, now 2)1 (was 1, now 11)4 9 8
−8042
23456

Column by column: 31,498 − 8,042

  • Ones: 8 − 2 = 6 — write 6.
  • Tens: 9 − 4 = 5 — write 5.
  • Hundreds: 4 − 0 = 4 — write 4.
  • Thousands: 1 is less than 8 — borrow 1 ten thousand: ten thousands 3 → 2; 11 − 8 = 3 — write 3.
  • Ten thousands: after borrowing, 2; nothing to subtract — write 2.

31,498 − 8,042 = 23,456

Second check: 31,498 − 23,456 = 8,042

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Column subtractions of 8,042

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31,495 − 8,04223,453
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31,497 − 8,04223,455
31,498 − 8,04223,456
31,499 − 8,04223,457
31,500 − 8,04223,458
31,501 − 8,04223,459
31,502 − 8,04223,460
31,503 − 8,04223,461

FAQ

What is 31,498 − 8,042?

31,498 − 8,042 = 23,456

How do you check that 31,498 − 8,042 = 23,456?

Add the difference and the subtrahend: 23,456 + 8,042 = 31,498. Getting the minuend back means the difference is right.

How many times do you borrow in 31,498 − 8,042?

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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