Subtraction with Regrouping: 647 − 69

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 647 − 69?

Answer

647 − 69 =
578

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

647 − 69 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)7 (was 7, now 17)
−69
578

Column by column: 647 − 69

  • Ones: 7 is less than 9 — borrow 1 ten: tens 4 → 3; 17 − 9 = 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.

647 − 69 = 578

Second check: 647 − 578 = 69

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Column subtractions of 69

ExampleDifference
154 − 6985
158 − 6989
161 − 6992
163 − 6994
167 − 6998
174 − 69105
205 − 69136
241 − 69172
272 − 69203
308 − 69239
337 − 69268
376 − 69307
417 − 69348
445 − 69376
471 − 69402
522 − 69453
554 − 69485
605 − 69536
647 − 69578
716 − 69647

FAQ

What is 647 − 69?

647 − 69 = 578

How do you check that 647 − 69 = 578?

Add the difference and the subtrahend: 578 + 69 = 647. Getting the minuend back means the difference is right.

How many times do you borrow in 647 − 69?

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

See Also