Addition with Regrouping: 39 + 28

Addition with Regrouping Calculator

What is 39 + 28?

Answer

39 + 28 =

67

With regrouping: 1 carry — into the tens

39 + 28 in a column. Carries are the small circled digits above the columns.
		1carry
		3	9
	+	2	8
		6	7

Column by column: 39 + 28

Ones: 9 + 8 = 17 — write 7, carry 1.
Tens: 3 + 2 + 1 = 6 — write 6.

39 + 28 = 67

Second check: 67 − 39 = 28

Similar examples to practise

Related Calculations

67 − 28 = 39 - 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 28

Example	Sum
28 + 28	56
34 + 28	62
36 + 28	64
39 + 28	67
41 + 28	69
45 + 28	73
47 + 28	75
52 + 28	80
54 + 28	82
58 + 28	86
63 + 28	91
65 + 28	93
67 + 28	95
69 + 28	97
71 + 28	99
72 + 28	100
74 + 28	102
76 + 28	104
78 + 28	106
83 + 28	111

FAQ

What is 39 + 28?

39 + 28 = 67

How do you check that 39 + 28 = 67?

Subtract one addend from the sum: 67 − 28 = 39, and 67 − 39 = 28. Getting the other addend back means the sum is right.

How many carries are there in 39 + 28?

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 28 + 39 the same as 39 + 28?

Yes. Addition is commutative, so both give 67; the column looks the same with either number on top.

See Also