Column Addition: 172 + 17

Addition with Regrouping Calculator

What is 172 + 17?

Answer

172 + 17 =

189

No regrouping: each column is added on its own

172 + 17 in a column. No carries.
		1	7	2
	+		1	7
		1	8	9

Column by column: 172 + 17

Ones: 2 + 7 = 9 — write 9.
Tens: 7 + 1 = 8 — write 8.
Hundreds: nothing to add — write 1.

172 + 17 = 189

Second check: 189 − 172 = 17

Similar examples to practise

Related Calculations

189 − 17 = 172 - Column Subtraction

See Also

Subtraction with Regrouping Calculator - Column subtraction step by step, with borrowing across zeros
Long Multiplication Calculator - Column multiplication with partial products, step by step
Long Division Calculator - Step-by-step long division with detailed explanation
Adding Fractions Calculator - Add fractions, mixed numbers and whole numbers step by step

Recalculate with different values ↑

Column additions with 17

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

FAQ

What is 172 + 17?

172 + 17 = 189

How do you check that 172 + 17 = 189?

Subtract one addend from the sum: 189 − 17 = 172, and 189 − 172 = 17. Getting the other addend back means the sum is right.

How many carries are there in 172 + 17?

None: no column adds up to 10 or more, so every digit of the sum is written straight away.

Is 17 + 172 the same as 172 + 17?

Yes. Addition is commutative, so both give 189; the column looks the same with either number on top.

See Also