Addition with Regrouping: 23 + 17

Addition with Regrouping Calculator

What is 23 + 17?

Answer

23 + 17 =

40

With regrouping: 1 carry — into the tens

23 + 17 in a column. Carries are the small circled digits above the columns.
		1carry
		2	3
	+	1	7
		4	0

Column by column: 23 + 17

Ones: 3 + 7 = 10 — write 0, carry 1.
Tens: 2 + 1 + 1 = 4 — write 4.

23 + 17 = 40

Second check: 40 − 23 = 17

Similar examples to practise

Related Calculations

40 − 17 = 23 - 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 17

Example	Sum
17 + 17	34
19 + 17	36
23 + 17	40
26 + 17	43
28 + 17	45
34 + 17	51
36 + 17	53
39 + 17	56
41 + 17	58
45 + 17	62
47 + 17	64
52 + 17	69
54 + 17	71
58 + 17	75
63 + 17	80
65 + 17	82
67 + 17	84
69 + 17	86
71 + 17	88
74 + 17	91

FAQ

What is 23 + 17?

23 + 17 = 40

How do you check that 23 + 17 = 40?

Subtract one addend from the sum: 40 − 17 = 23, and 40 − 23 = 17. Getting the other addend back means the sum is right.

How many carries are there in 23 + 17?

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 17 + 23 the same as 23 + 17?

Yes. Addition is commutative, so both give 40; the column looks the same with either number on top.

See Also