Column Subtraction: 189 − 17

Subtraction with Regrouping Calculator

What is 189 − 17?

Answer

189 − 17 =

172

No regrouping: each column is subtracted on its own

189 − 17 in a column. No borrowing.
		1	8	9
	−		1	7
		1	7	2

Column by column: 189 − 17

Ones: 9 − 7 = 2 — write 2.
Tens: 8 − 1 = 7 — write 7.
Hundreds: nothing to subtract — write 1.

189 − 17 = 172

Second check: 189 − 172 = 17

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Related Calculations

172 + 17 = 189 - Column Addition

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 17

Example	Difference
93 − 17	76
95 − 17	78
100 − 17	83
102 − 17	85
106 − 17	89
109 − 17	92
111 − 17	94
115 − 17	98
122 − 17	105
153 − 17	136
189 − 17	172
200 − 17	183
220 − 17	203
256 − 17	239
285 − 17	268
300 − 17	283
324 − 17	307
365 − 17	348
393 − 17	376
419 − 17	402

FAQ

What is 189 − 17?

189 − 17 = 172

How do you check that 189 − 17 = 172?

Add the difference and the subtrahend: 172 + 17 = 189. Getting the minuend back means the difference is right.

How many times do you borrow in 189 − 17?

Not once: every top digit is at least as large as the digit below it.

See Also