Subtraction with Regrouping: 11,621 − 3,579

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 11,621 − 3,579?

Answer

11,621 − 3,579 =
8,042

With regrouping: 3 borrows — from the tens, the hundreds and the ten thousands

11,621 − 3,579 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.
0+10511+10
1(was 1, now 0)1 (was 1, now 11)6(was 6, now 5)2(was 2, now 11)1 (was 1, now 11)
−3579
8042

Column by column: 11,621 − 3,579

  • Ones: 1 is less than 9 — borrow 1 ten: tens 2 → 1; 11 − 9 = 2 — write 2.
  • Tens: after borrowing, 1; 1 is less than 7 — borrow 1 hundred: hundreds 6 → 5; 11 − 7 = 4 — write 4.
  • Hundreds: after borrowing, 5; 5 − 5 = 0 — write 0.
  • Thousands: 1 is less than 3 — borrow 1 ten thousand: ten thousands 1 → 0; 11 − 3 = 8 — write 8.
  • Ten thousands: after borrowing, 0 — a leading zero is not written.

11,621 − 3,579 = 8,042

Second check: 11,621 − 8,042 = 3,579

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Column subtractions of 3,579

ExampleDifference
11,616 − 3,5798,037
11,617 − 3,5798,038
11,618 − 3,5798,039
11,619 − 3,5798,040
11,620 − 3,5798,041
11,621 − 3,5798,042
11,622 − 3,5798,043
11,623 − 3,5798,044
11,624 − 3,5798,045
11,625 − 3,5798,046
11,626 − 3,5798,047

FAQ

What is 11,621 − 3,579?

11,621 − 3,579 = 8,042

How do you check that 11,621 − 3,579 = 8,042?

Add the difference and the subtrahend: 8,042 + 3,579 = 11,621. Getting the minuend back means the difference is right.

How many times do you borrow in 11,621 − 3,579?

3 borrows: 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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