Subtraction with Regrouping: 980 − 402

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 980 − 402?

Answer

980 − 402 =
578

With regrouping: 1 borrow — from the tens

980 − 402 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
9 8(was 8, now 7)0 (was 0, now 10)
−402
578

Column by column: 980 − 402

  • Ones: 0 is less than 2 — borrow 1 ten: tens 8 → 7; 10 − 2 = 8 — write 8.
  • Tens: after borrowing, 7; 7 − 0 = 7 — write 7.
  • Hundreds: 9 − 4 = 5 — write 5.

980 − 402 = 578

Second check: 980 − 578 = 402

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See Also

FAQ

What is 980 − 402?

980 − 402 = 578

How do you check that 980 − 402 = 578?

Add the difference and the subtrahend: 578 + 402 = 980. Getting the minuend back means the difference is right.

How many times do you borrow in 980 − 402?

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