Column Addition: 172 + 12

Addition with Regrouping Calculator

What is 172 + 12?

Answer

172 + 12 =

184

No regrouping: each column is added on its own

172 + 12 in a column. No carries.
		1	7	2
	+		1	2
		1	8	4

Column by column: 172 + 12

Ones: 2 + 2 = 4 — write 4.
Tens: 7 + 1 = 8 — write 8.
Hundreds: nothing to add — write 1.

172 + 12 = 184

Second check: 184 − 172 = 12

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Related Calculations

184 − 12 = 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 12

Example	Sum
78 + 12	90
83 + 12	95
85 + 12	97
88 + 12	100
89 + 12	101
92 + 12	104
94 + 12	106
98 + 12	110
105 + 12	117
136 + 12	148
172 + 12	184
188 + 12	200
203 + 12	215
239 + 12	251
268 + 12	280
288 + 12	300
307 + 12	319
348 + 12	360
376 + 12	388
388 + 12	400

FAQ

What is 172 + 12?

172 + 12 = 184

How do you check that 172 + 12 = 184?

Subtract one addend from the sum: 184 − 12 = 172, and 184 − 172 = 12. Getting the other addend back means the sum is right.

How many carries are there in 172 + 12?

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

Is 12 + 172 the same as 172 + 12?

Yes. Addition is commutative, so both give 184; the column looks the same with either number on top.

See Also