Subtraction with Regrouping: 231 − 28

Subtraction with Regrouping Calculator

What is 231 − 28?

Answer

231 − 28 =

203

With regrouping: 1 borrow — from the tens

231 − 28 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.
			2	+10
		2	3(was 3, now 2)	1 (was 1, now 11)
	−		2	8
		2	0	3

Column by column: 231 − 28

Ones: 1 is less than 8 — borrow 1 ten: tens 3 → 2; 11 − 8 = 3 — write 3.
Tens: after borrowing, 2; 2 − 2 = 0 — write 0.
Hundreds: nothing to subtract — write 2.

231 − 28 = 203

Second check: 231 − 203 = 28

Similar examples to practise

Related Calculations

203 + 28 = 231 - 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 28

Example	Difference
106 − 28	78
111 − 28	83
113 − 28	85
117 − 28	89
120 − 28	92
122 − 28	94
126 − 28	98
133 − 28	105
164 − 28	136
200 − 28	172
231 − 28	203
267 − 28	239
296 − 28	268
300 − 28	272
335 − 28	307
376 − 28	348
400 − 28	372
404 − 28	376
430 − 28	402
481 − 28	453

FAQ

What is 231 − 28?

231 − 28 = 203

How do you check that 231 − 28 = 203?

Add the difference and the subtrahend: 203 + 28 = 231. Getting the minuend back means the difference is right.

How many times do you borrow in 231 − 28?

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