Subtraction with Regrouping: 800 − 348

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 800 − 348?

Answer

800 − 348 =
452

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 − 348 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)
−348
452

Column by column: 800 − 348

  • Ones: 0 is less than 8 — borrow 1 hundred across the zero: hundreds 8 → 7, tens 0 → 9; 10 − 8 = 2 — write 2.
  • Tens: after borrowing, 9; 9 − 4 = 5 — write 5.
  • Hundreds: after borrowing, 7; 7 − 3 = 4 — write 4.

800 − 348 = 452

Second check: 800 − 452 = 348

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Recalculate with different values ↑

Column subtractions of 348

ExampleDifference
696 − 348348
700 − 348352
702 − 348354
724 − 348376
737 − 348389
750 − 348402
775 − 348427
800 − 348452
801 − 348453
816 − 348468
833 − 348485
867 − 348519
884 − 348536
900 − 348552
912 − 348564
926 − 348578
950 − 348602
995 − 348647
1,000 − 348652
1,031 − 348683

FAQ

What is 800 − 348?

800 − 348 = 452

How do you check that 800 − 348 = 452?

Add the difference and the subtrahend: 452 + 348 = 800. Getting the minuend back means the difference is right.

How many times do you borrow in 800 − 348?

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 − 348?

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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