Addition with Regrouping: 172 + 34

Addition with Regrouping Calculator
First addend
Second addend

What is 172 + 34?

Answer

172 + 34 =
206

With regrouping: 1 carry — into the hundreds

172 + 34 in a column. Carries are the small circled digits above the columns.
1carry
1 7 2
+34
206

Column by column: 172 + 34

  • Ones: 2 + 4 = 6 — write 6.
  • Tens: 7 + 3 = 10 — write 0, carry 1.
  • Hundreds: 1 + 1 = 2 — write 2.

172 + 34 = 206

Second check: 206 − 172 = 34

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Recalculate with different values ↑

Column additions with 34

ExampleSum
76 + 34110
78 + 34112
83 + 34117
85 + 34119
89 + 34123
92 + 34126
94 + 34128
98 + 34132
105 + 34139
136 + 34170
172 + 34206
203 + 34237
239 + 34273
268 + 34302
307 + 34341
348 + 34382
376 + 34410
402 + 34436
453 + 34487
485 + 34519

FAQ

What is 172 + 34?

172 + 34 = 206

How do you check that 172 + 34 = 206?

Subtract one addend from the sum: 206 − 34 = 172, and 206 − 172 = 34. Getting the other addend back means the sum is right.

How many carries are there in 172 + 34?

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 34 + 172 the same as 172 + 34?

Yes. Addition is commutative, so both give 206; the column looks the same with either number on top.

See Also