Subtraction with Regrouping: 125 − 47

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 125 − 47?

Answer

125 − 47 =
78

With regrouping: 2 borrows — from the tens and the hundreds

125 − 47 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)5 (was 5, now 15)
−47
78

Column by column: 125 − 47

  • Ones: 5 is less than 7 — borrow 1 ten: tens 2 → 1; 15 − 7 = 8 — write 8.
  • Tens: after borrowing, 1; 1 is less than 4 — borrow 1 hundred: hundreds 1 → 0; 11 − 4 = 7 — write 7.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

125 − 47 = 78

Second check: 125 − 78 = 47

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See Also

FAQ

What is 125 − 47?

125 − 47 = 78

How do you check that 125 − 47 = 78?

Add the difference and the subtrahend: 78 + 47 = 125. Getting the minuend back means the difference is right.

How many times do you borrow in 125 − 47?

2 borrows: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.