Addition with Regrouping: 777 + 23

Addition with Regrouping Calculator

What is 777 + 23?

Answer

777 + 23 =

800

With regrouping: 2 carries — into the tens and the hundreds

777 + 23 in a column. Carries are the small circled digits above the columns.
		1carry	1carry
		7	7	7
	+		2	3
		8	0	0

Column by column: 777 + 23

Ones: 7 + 3 = 10 — write 0, carry 1.
Tens: 7 + 2 + 1 = 10 — write 0, carry 1.
Hundreds: 7 + 1 = 8 — write 8.

777 + 23 = 800

Second check: 800 − 777 = 23

Similar examples to practise

Related Calculations

800 − 23 = 777 - 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 23

Example	Sum
203 + 23	226
239 + 23	262
268 + 23	291
277 + 23	300
307 + 23	330
348 + 23	371
376 + 23	399
402 + 23	425
453 + 23	476
485 + 23	508
536 + 23	559
578 + 23	601
647 + 23	670
677 + 23	700
777 + 23	800
877 + 23	900
977 + 23	1,000
1,977 + 23	2,000
4,977 + 23	5,000
9,977 + 23	10,000

FAQ

What is 777 + 23?

777 + 23 = 800

How do you check that 777 + 23 = 800?

Subtract one addend from the sum: 800 − 23 = 777, and 800 − 777 = 23. Getting the other addend back means the sum is right.

How many carries are there in 777 + 23?

2 carries: 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 23 + 777 the same as 777 + 23?

Yes. Addition is commutative, so both give 800; the column looks the same with either number on top.

See Also