Subtraction with Regrouping: 385 − 78

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 385 − 78?

Answer

385 − 78 =
307

With regrouping: 1 borrow — from the tens

385 − 78 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.
7+10
3 8(was 8, now 7)5 (was 5, now 15)
−78
307

Column by column: 385 − 78

  • Ones: 5 is less than 8 — borrow 1 ten: tens 8 → 7; 15 − 8 = 7 — write 7.
  • Tens: after borrowing, 7; 7 − 7 = 0 — write 0.
  • Hundreds: nothing to subtract — write 3.

385 − 78 = 307

Second check: 385 − 307 = 78

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See Also

FAQ

What is 385 − 78?

385 − 78 = 307

How do you check that 385 − 78 = 307?

Add the difference and the subtrahend: 307 + 78 = 385. Getting the minuend back means the difference is right.

How many times do you borrow in 385 − 78?

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