Addition with Regrouping: 69 + 39

Addition with Regrouping Calculator
First addend
Second addend

What is 69 + 39?

Answer

69 + 39 =
108

The sum is longer than the addends: 2 carries — into the tens and the hundreds; the last one makes a new digit

69 + 39 in a column. Carries are the small circled digits above the columns.
1carry1carry
6 9
+39
108

Column by column: 69 + 39

  • Ones: 9 + 9 = 18 — write 8, carry 1.
  • Tens: 6 + 3 + 1 = 10 — write 0, carry 1.
  • Hundreds: the carried 1 — write 1.

69 + 39 = 108

Second check: 108 − 69 = 39

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39 + 3978
41 + 3980
45 + 3984
47 + 3986
52 + 3991
54 + 3993
58 + 3997
63 + 39102
65 + 39104
67 + 39106
69 + 39108
71 + 39110
74 + 39113
76 + 39115
78 + 39117
83 + 39122
85 + 39124
89 + 39128
92 + 39131
94 + 39133

FAQ

What is 69 + 39?

69 + 39 = 108

How do you check that 69 + 39 = 108?

Subtract one addend from the sum: 108 − 39 = 69, and 108 − 69 = 39. Getting the other addend back means the sum is right.

How many carries are there in 69 + 39?

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 39 + 69 the same as 69 + 39?

Yes. Addition is commutative, so both give 108; the column looks the same with either number on top.

See Also