Subtraction with Regrouping: 643 − 65

Subtraction with Regrouping Calculator

What is 643 − 65?

Answer

643 − 65 =

578

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

643 − 65 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.
		5	13	+10
		6(was 6, now 5)	4(was 4, now 13)	3 (was 3, now 13)
	−		6	5
		5	7	8

Column by column: 643 − 65

Ones: 3 is less than 5 — borrow 1 ten: tens 4 → 3; 13 − 5 = 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.

643 − 65 = 578

Second check: 643 − 578 = 65

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Related Calculations

578 + 65 = 643 - Addition with Regrouping

See Also

Addition with Regrouping Calculator - Column addition step by step, with every carry
Long Division Calculator - Step-by-step long division with detailed explanation
Long Multiplication Calculator - Column multiplication with partial products, step by step
Subtracting Fractions Calculator - Subtract fractions, mixed numbers and whole numbers step by step

Recalculate with different values ↑

Column subtractions of 65

Example	Difference
150 − 65	85
154 − 65	89
157 − 65	92
159 − 65	94
163 − 65	98
170 − 65	105
201 − 65	136
237 − 65	172
268 − 65	203
304 − 65	239
333 − 65	268
372 − 65	307
413 − 65	348
441 − 65	376
467 − 65	402
518 − 65	453
550 − 65	485
601 − 65	536
643 − 65	578
712 − 65	647

FAQ

What is 643 − 65?

643 − 65 = 578

How do you check that 643 − 65 = 578?

Add the difference and the subtrahend: 578 + 65 = 643. Getting the minuend back means the difference is right.

How many times do you borrow in 643 − 65?

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