Subtraction with Regrouping: 645 − 67

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 645 − 67?

Answer

645 − 67 =
578

With regrouping: 2 borrows — from the tens and the hundreds

645 − 67 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.
513+10
6(was 6, now 5)4(was 4, now 13)5 (was 5, now 15)
−67
578

Column by column: 645 − 67

  • Ones: 5 is less than 7 — borrow 1 ten: tens 4 → 3; 15 − 7 = 8 — write 8.
  • Tens: after borrowing, 3; 3 is less than 6 — borrow 1 hundred: hundreds 6 → 5; 13 − 6 = 7 — write 7.
  • Hundreds: after borrowing, 5; nothing to subtract — write 5.

645 − 67 = 578

Second check: 645 − 578 = 67

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Recalculate with different values ↑

Column subtractions of 67

ExampleDifference
172 − 67105
200 − 67133
203 − 67136
239 − 67172
270 − 67203
300 − 67233
306 − 67239
335 − 67268
374 − 67307
400 − 67333
415 − 67348
443 − 67376
469 − 67402
500 − 67433
520 − 67453
552 − 67485
600 − 67533
603 − 67536
645 − 67578
714 − 67647

FAQ

What is 645 − 67?

645 − 67 = 578

How do you check that 645 − 67 = 578?

Add the difference and the subtrahend: 578 + 67 = 645. Getting the minuend back means the difference is right.

How many times do you borrow in 645 − 67?

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

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