Subtraction with Regrouping: 661 − 307

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 661 − 307?

Answer

661 − 307 =
354

With regrouping: 1 borrow — from the tens

661 − 307 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.
5+10
6 6(was 6, now 5)1 (was 1, now 11)
−307
354

Column by column: 661 − 307

  • Ones: 1 is less than 7 — borrow 1 ten: tens 6 → 5; 11 − 7 = 4 — write 4.
  • Tens: after borrowing, 5; 5 − 0 = 5 — write 5.
  • Hundreds: 6 − 3 = 3 — write 3.

661 − 307 = 354

Second check: 661 − 354 = 307

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Recalculate with different values ↑

Column subtractions of 307

ExampleDifference
614 − 307307
632 − 307325
655 − 307348
661 − 307354
683 − 307376
696 − 307389
709 − 307402
734 − 307427
760 − 307453
775 − 307468
792 − 307485
826 − 307519
843 − 307536
871 − 307564
885 − 307578
909 − 307602
954 − 307647
990 − 307683

FAQ

What is 661 − 307?

661 − 307 = 354

How do you check that 661 − 307 = 354?

Add the difference and the subtrahend: 354 + 307 = 661. Getting the minuend back means the difference is right.

How many times do you borrow in 661 − 307?

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

See Also