Subtraction with Regrouping: 428 − 172

Subtraction with Regrouping Calculator

What is 428 − 172?

Answer

428 − 172 =

256

With regrouping: 1 borrow — from the hundreds

428 − 172 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.
		3	+10
		4(was 4, now 3)	2 (was 2, now 12)	8
	−	1	7	2
		2	5	6

Column by column: 428 − 172

Ones: 8 − 2 = 6 — write 6.
Tens: 2 is less than 7 — borrow 1 hundred: hundreds 4 → 3; 12 − 7 = 5 — write 5.
Hundreds: after borrowing, 3; 3 − 1 = 2 — write 2.

428 − 172 = 256

Second check: 428 − 256 = 172

Similar examples to practise

Related Calculations

256 + 172 = 428 - 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 172

Example	Difference
344 − 172	172
359 − 172	187
375 − 172	203
386 − 172	214
411 − 172	239
428 − 172	256
440 − 172	268
463 − 172	291
479 − 172	307
497 − 172	325
520 − 172	348
526 − 172	354
548 − 172	376
561 − 172	389
574 − 172	402
599 − 172	427
625 − 172	453
640 − 172	468
657 − 172	485
691 − 172	519

FAQ

What is 428 − 172?

428 − 172 = 256

How do you check that 428 − 172 = 256?

Add the difference and the subtrahend: 256 + 172 = 428. Getting the minuend back means the difference is right.

How many times do you borrow in 428 − 172?

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

See Also