Column Addition: 402 + 172

Addition with Regrouping Calculator

What is 402 + 172?

Answer

402 + 172 =

574

No regrouping: each column is added on its own

402 + 172 in a column. No carries.
		4	0	2
	+	1	7	2
		5	7	4

Column by column: 402 + 172

Ones: 2 + 2 = 4 — write 4.
Tens: 0 + 7 = 7 — write 7.
Hundreds: 4 + 1 = 5 — write 5.

402 + 172 = 574

Second check: 574 − 402 = 172

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574 − 172 = 402 - 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
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
536 + 172	708
564 + 172	736
578 + 172	750
602 + 172	774

FAQ

What is 402 + 172?

402 + 172 = 574

How do you check that 402 + 172 = 574?

Subtract one addend from the sum: 574 − 172 = 402, and 574 − 402 = 172. Getting the other addend back means the sum is right.

How many carries are there in 402 + 172?

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

Is 172 + 402 the same as 402 + 172?

Yes. Addition is commutative, so both give 574; the column looks the same with either number on top.

See Also