Column Addition: 307 + 172

Addition with Regrouping Calculator

What is 307 + 172?

Answer

307 + 172 =

479

No regrouping: each column is added on its own

307 + 172 in a column. No carries.
		3	0	7
	+	1	7	2
		4	7	9

Column by column: 307 + 172

Ones: 7 + 2 = 9 — write 9.
Tens: 0 + 7 = 7 — write 7.
Hundreds: 3 + 1 = 4 — write 4.

307 + 172 = 479

Second check: 479 − 307 = 172

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479 − 172 = 307 - 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 172

Example	Sum
172 + 172	344
187 + 172	359
203 + 172	375
214 + 172	386
239 + 172	411
256 + 172	428
268 + 172	440
291 + 172	463
307 + 172	479
325 + 172	497
348 + 172	520
354 + 172	526
376 + 172	548
389 + 172	561
402 + 172	574
427 + 172	599
453 + 172	625
468 + 172	640
485 + 172	657
519 + 172	691

FAQ

What is 307 + 172?

307 + 172 = 479

How do you check that 307 + 172 = 479?

Subtract one addend from the sum: 479 − 172 = 307, and 479 − 307 = 172. Getting the other addend back means the sum is right.

How many carries are there in 307 + 172?

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

Is 172 + 307 the same as 307 + 172?

Yes. Addition is commutative, so both give 479; the column looks the same with either number on top.

See Also