Addition with Regrouping: 402 + 128

Addition with Regrouping Calculator

What is 402 + 128?

Answer

402 + 128 =

530

With regrouping: 1 carry — into the tens

402 + 128 in a column. Carries are the small circled digits above the columns.
			1carry
		4	0	2
	+	1	2	8
		5	3	0

Column by column: 402 + 128

Ones: 2 + 8 = 10 — write 0, carry 1.
Tens: 0 + 2 + 1 = 3 — write 3.
Hundreds: 4 + 1 = 5 — write 5.

402 + 128 = 530

Second check: 530 − 402 = 128

Similar examples to practise

Related Calculations

530 − 128 = 402 - Subtraction with Regrouping

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 128

Example	Sum
239 + 128	367
256 + 128	384
268 + 128	396
291 + 128	419
307 + 128	435
325 + 128	453
348 + 128	476
354 + 128	482
376 + 128	504
389 + 128	517
402 + 128	530
427 + 128	555
453 + 128	581
468 + 128	596
485 + 128	613
519 + 128	647
536 + 128	664
564 + 128	692
578 + 128	706
602 + 128	730

FAQ

What is 402 + 128?

402 + 128 = 530

How do you check that 402 + 128 = 530?

Subtract one addend from the sum: 530 − 128 = 402, and 530 − 402 = 128. Getting the other addend back means the sum is right.

How many carries are there in 402 + 128?

1 carry: every time a column added up to 10 or more, its ones digit was written and 1 was carried to the next column on the left.

Is 128 + 402 the same as 402 + 128?

Yes. Addition is commutative, so both give 530; the column looks the same with either number on top.