Column Addition: 402 + 307

Addition with Regrouping Calculator

What is 402 + 307?

Answer

402 + 307 =

709

No regrouping: each column is added on its own

402 + 307 in a column. No carries.
		4	0	2
	+	3	0	7
		7	0	9

Column by column: 402 + 307

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

402 + 307 = 709

Second check: 709 − 402 = 307

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Related Calculations

709 − 307 = 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 307

Example	Sum
307 + 307	614
325 + 307	632
348 + 307	655
354 + 307	661
376 + 307	683
389 + 307	696
402 + 307	709
427 + 307	734
453 + 307	760
468 + 307	775
485 + 307	792
519 + 307	826
536 + 307	843
564 + 307	871
578 + 307	885
602 + 307	909
647 + 307	954
683 + 307	990

FAQ

What is 402 + 307?

402 + 307 = 709

How do you check that 402 + 307 = 709?

Subtract one addend from the sum: 709 − 307 = 402, and 709 − 402 = 307. Getting the other addend back means the sum is right.

How many carries are there in 402 + 307?

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

Is 307 + 402 the same as 402 + 307?

Yes. Addition is commutative, so both give 709; the column looks the same with either number on top.

See Also