Subtraction with Regrouping: 807 − 354

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 807 − 354?

Answer

807 − 354 =
453

With regrouping: 1 borrow — from the hundreds

807 − 354 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
8(was 8, now 7)0 (was 0, now 10)7
−354
453

Column by column: 807 − 354

  • Ones: 7 − 4 = 3 — write 3.
  • Tens: 0 is less than 5 — borrow 1 hundred: hundreds 8 → 7; 10 − 5 = 5 — write 5.
  • Hundreds: after borrowing, 7; 7 − 3 = 4 — write 4.

807 − 354 = 453

Second check: 807 − 453 = 354

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FAQ

What is 807 − 354?

807 − 354 = 453

How do you check that 807 − 354 = 453?

Add the difference and the subtrahend: 453 + 354 = 807. Getting the minuend back means the difference is right.

How many times do you borrow in 807 − 354?

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