Addition with Regrouping: 78 + 17

Addition with Regrouping Calculator

What is 78 + 17?

Answer

78 + 17 =

95

With regrouping: 1 carry — into the tens

78 + 17 in a column. Carries are the small circled digits above the columns.
		1carry
		7	8
	+	1	7
		9	5

Column by column: 78 + 17

Ones: 8 + 7 = 15 — write 5, carry 1.
Tens: 7 + 1 + 1 = 9 — write 9.

78 + 17 = 95

Second check: 95 − 78 = 17

Similar examples to practise

Related Calculations

95 − 17 = 78 - 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
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
76 + 17	93
78 + 17	95
83 + 17	100
85 + 17	102
89 + 17	106
92 + 17	109
94 + 17	111
98 + 17	115
105 + 17	122
136 + 17	153
172 + 17	189

FAQ

What is 78 + 17?

78 + 17 = 95

How do you check that 78 + 17 = 95?

Subtract one addend from the sum: 95 − 17 = 78, and 95 − 78 = 17. Getting the other addend back means the sum is right.

How many carries are there in 78 + 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 + 78 the same as 78 + 17?

Yes. Addition is commutative, so both give 95; the column looks the same with either number on top.

See Also