Column Addition: 307 + 71

Addition with Regrouping Calculator

What is 307 + 71?

Answer

307 + 71 =

378

No regrouping: each column is added on its own

307 + 71 in a column. No carries.
		3	0	7
	+		7	1
		3	7	8

Column by column: 307 + 71

Ones: 7 + 1 = 8 — write 8.
Tens: 0 + 7 = 7 — write 7.
Hundreds: nothing to add — write 3.

307 + 71 = 378

Second check: 378 − 307 = 71

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Related Calculations

378 − 71 = 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 71

Example	Sum
94 + 71	165
98 + 71	169
105 + 71	176
129 + 71	200
136 + 71	207
172 + 71	243
203 + 71	274
229 + 71	300
239 + 71	310
268 + 71	339
307 + 71	378
348 + 71	419
376 + 71	447
402 + 71	473
453 + 71	524
485 + 71	556
536 + 71	607
578 + 71	649
629 + 71	700
647 + 71	718

FAQ

What is 307 + 71?

307 + 71 = 378

How do you check that 307 + 71 = 378?

Subtract one addend from the sum: 378 − 71 = 307, and 378 − 307 = 71. Getting the other addend back means the sum is right.

How many carries are there in 307 + 71?

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

Is 71 + 307 the same as 307 + 71?

Yes. Addition is commutative, so both give 378; the column looks the same with either number on top.

See Also