Subtraction with Regrouping: 12,155 − 4,805

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 12,155 − 4,805?

Answer

12,155 − 4,805 =
7,350

With regrouping: 2 borrows — from the thousands and the ten thousands

12,155 − 4,805 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.
011+10
1(was 1, now 0)2(was 2, now 11)1 (was 1, now 11)5 5
−4805
7350

Column by column: 12,155 − 4,805

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

12,155 − 4,805 = 7,350

Second check: 12,155 − 7,350 = 4,805

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Column subtractions of 4,805

ExampleDifference
12,150 − 4,8057,345
12,151 − 4,8057,346
12,152 − 4,8057,347
12,153 − 4,8057,348
12,154 − 4,8057,349
12,155 − 4,8057,350
12,156 − 4,8057,351
12,157 − 4,8057,352
12,158 − 4,8057,353
12,159 − 4,8057,354
12,160 − 4,8057,355

FAQ

What is 12,155 − 4,805?

12,155 − 4,805 = 7,350

How do you check that 12,155 − 4,805 = 7,350?

Add the difference and the subtrahend: 7,350 + 4,805 = 12,155. Getting the minuend back means the difference is right.

How many times do you borrow in 12,155 − 4,805?

2 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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