Subtraction with Regrouping: 400 − 47

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 400 − 47?

Answer

400 − 47 =
353

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

400 − 47 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.
39+10
4(was 4, now 3)0(was 0, now 9)0 (was 0, now 10)
−47
353

Column by column: 400 − 47

  • Ones: 0 is less than 7 — borrow 1 hundred across the zero: hundreds 4 → 3, tens 0 → 9; 10 − 7 = 3 — write 3.
  • Tens: after borrowing, 9; 9 − 4 = 5 — write 5.
  • Hundreds: after borrowing, 3; nothing to subtract — write 3.

400 − 47 = 353

Second check: 400 − 353 = 47

Similar examples to practise

Related Calculations

See Also

Recalculate with different values ↑

Column subtractions of 47

ExampleDifference
152 − 47105
183 − 47136
200 − 47153
219 − 47172
250 − 47203
286 − 47239
300 − 47253
315 − 47268
354 − 47307
395 − 47348
400 − 47353
423 − 47376
449 − 47402
500 − 47453
532 − 47485
583 − 47536
600 − 47553
625 − 47578
694 − 47647
700 − 47653

FAQ

What is 400 − 47?

400 − 47 = 353

How do you check that 400 − 47 = 353?

Add the difference and the subtrahend: 353 + 47 = 400. Getting the minuend back means the difference is right.

How many times do you borrow in 400 − 47?

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 400 − 47?

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