Subtraction with Regrouping: 351 − 83

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 351 − 83?

Answer

351 − 83 =
268

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

351 − 83 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.
214+10
3(was 3, now 2)5(was 5, now 14)1 (was 1, now 11)
−83
268

Column by column: 351 − 83

  • Ones: 1 is less than 3 — borrow 1 ten: tens 5 → 4; 11 − 3 = 8 — write 8.
  • Tens: after borrowing, 4; 4 is less than 8 — borrow 1 hundred: hundreds 3 → 2; 14 − 8 = 6 — write 6.
  • Hundreds: after borrowing, 2; nothing to subtract — write 2.

351 − 83 = 268

Second check: 351 − 268 = 83

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See Also

FAQ

What is 351 − 83?

351 − 83 = 268

How do you check that 351 − 83 = 268?

Add the difference and the subtrahend: 268 + 83 = 351. Getting the minuend back means the difference is right.

How many times do you borrow in 351 − 83?

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