Subtraction with Regrouping: 480 − 78

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 480 − 78?

Answer

480 − 78 =
402

With regrouping: 1 borrow — from the tens

480 − 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
4 8(was 8, now 7)0 (was 0, now 10)
−78
402

Column by column: 480 − 78

  • Ones: 0 is less than 8 — borrow 1 ten: tens 8 → 7; 10 − 8 = 2 — write 2.
  • Tens: after borrowing, 7; 7 − 7 = 0 — write 0.
  • Hundreds: nothing to subtract — write 4.

480 − 78 = 402

Second check: 480 − 402 = 78

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See Also

FAQ

What is 480 − 78?

480 − 78 = 402

How do you check that 480 − 78 = 402?

Add the difference and the subtrahend: 402 + 78 = 480. Getting the minuend back means the difference is right.

How many times do you borrow in 480 − 78?

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