Subtraction with Regrouping: 800 − 63

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 800 − 63?

Answer

800 − 63 =
737

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 − 63 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)
−63
737

Column by column: 800 − 63

  • Ones: 0 is less than 3 — borrow 1 hundred across the zero: hundreds 8 → 7, tens 0 → 9; 10 − 3 = 7 — write 7.
  • Tens: after borrowing, 9; 9 − 6 = 3 — write 3.
  • Hundreds: after borrowing, 7; nothing to subtract — write 7.

800 − 63 = 737

Second check: 800 − 737 = 63

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Recalculate with different values ↑

Column subtractions of 63

ExampleDifference
266 − 63203
300 − 63237
302 − 63239
331 − 63268
370 − 63307
411 − 63348
439 − 63376
465 − 63402
516 − 63453
548 − 63485
599 − 63536
641 − 63578
700 − 63637
710 − 63647
800 − 63737
900 − 63837
1,000 − 63937
2,000 − 631,937
5,000 − 634,937
10,000 − 639,937

FAQ

What is 800 − 63?

800 − 63 = 737

How do you check that 800 − 63 = 737?

Add the difference and the subtrahend: 737 + 63 = 800. Getting the minuend back means the difference is right.

How many times do you borrow in 800 − 63?

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 − 63?

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.

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