Addition with Regrouping: 203 + 187

Addition with Regrouping Calculator
First addend
Second addend

What is 203 + 187?

Answer

203 + 187 =
390

With regrouping: 1 carry — into the tens

203 + 187 in a column. Carries are the small circled digits above the columns.
1carry
2 0 3
+187
390

Column by column: 203 + 187

  • Ones: 3 + 7 = 10 — write 0, carry 1.
  • Tens: 0 + 8 + 1 = 9 — write 9.
  • Hundreds: 2 + 1 = 3 — write 3.

203 + 187 = 390

Second check: 390 − 203 = 187

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Column additions with 187

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187 + 187374
203 + 187390
214 + 187401
239 + 187426
256 + 187443
268 + 187455
291 + 187478
307 + 187494
325 + 187512
348 + 187535
354 + 187541
376 + 187563
389 + 187576
402 + 187589
427 + 187614
453 + 187640
468 + 187655
485 + 187672
519 + 187706
536 + 187723

FAQ

What is 203 + 187?

203 + 187 = 390

How do you check that 203 + 187 = 390?

Subtract one addend from the sum: 390 − 187 = 203, and 390 − 203 = 187. Getting the other addend back means the sum is right.

How many carries are there in 203 + 187?

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 187 + 203 the same as 203 + 187?

Yes. Addition is commutative, so both give 390; the column looks the same with either number on top.

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