Column Subtraction: 187 − 15

Subtraction with Regrouping Calculator

What is 187 − 15?

Answer

187 − 15 =

172

No regrouping: each column is subtracted on its own

187 − 15 in a column. No borrowing.
		1	8	7
	−		1	5
		1	7	2

Column by column: 187 − 15

Ones: 7 − 5 = 2 — write 2.
Tens: 8 − 1 = 7 — write 7.
Hundreds: nothing to subtract — write 1.

187 − 15 = 172

Second check: 187 − 172 = 15

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Related Calculations

172 + 15 = 187 - 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 15

Example	Difference
91 − 15	76
93 − 15	78
98 − 15	83
100 − 15	85
104 − 15	89
107 − 15	92
109 − 15	94
113 − 15	98
120 − 15	105
151 − 15	136
187 − 15	172
218 − 15	203
254 − 15	239
283 − 15	268
322 − 15	307
363 − 15	348
391 − 15	376
417 − 15	402
468 − 15	453
500 − 15	485

FAQ

What is 187 − 15?

187 − 15 = 172

How do you check that 187 − 15 = 172?

Add the difference and the subtrahend: 172 + 15 = 187. Getting the minuend back means the difference is right.

How many times do you borrow in 187 − 15?

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

See Also