Subtraction with Regrouping: 800 − 136

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 800 − 136?

Answer

800 − 136 =
664

With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

800 − 136 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.
79+10
8(was 8, now 7)0(was 0, now 9)0 (was 0, now 10)
−136
664

Column by column: 800 − 136

  • Ones: 0 is less than 6 — borrow 1 hundred across the zero: hundreds 8 → 7, tens 0 → 9; 10 − 6 = 4 — write 4.
  • Tens: after borrowing, 9; 9 − 3 = 6 — write 6.
  • Hundreds: after borrowing, 7; 7 − 1 = 6 — write 6.

800 − 136 = 664

Second check: 800 − 664 = 136

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Recalculate with different values ↑

Column subtractions of 136

ExampleDifference
512 − 136376
525 − 136389
538 − 136402
563 − 136427
589 − 136453
604 − 136468
621 − 136485
655 − 136519
672 − 136536
700 − 136564
714 − 136578
738 − 136602
783 − 136647
800 − 136664
819 − 136683
900 − 136764
1,000 − 136864
2,000 − 1361,864
5,000 − 1364,864
10,000 − 1369,864

FAQ

What is 800 − 136?

800 − 136 = 664

How do you check that 800 − 136 = 664?

Add the difference and the subtrahend: 664 + 136 = 800. Getting the minuend back means the difference is right.

How many times do you borrow in 800 − 136?

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

Why does 0 become 9 when borrowing in 800 − 136?

The zero has nothing to lend, so it first borrows 1 from its left neighbour and becomes 10; then it lends 1 to the column on its right and keeps 9.

See Also