Addition with Regrouping: 307 + 98

Addition with Regrouping Calculator
First addend
Second addend

What is 307 + 98?

Answer

307 + 98 =
405

With regrouping: 2 carries — into the tens and the hundreds

307 + 98 in a column. Carries are the small circled digits above the columns.
1carry1carry
3 0 7
+98
405

Column by column: 307 + 98

  • Ones: 7 + 8 = 15 — write 5, carry 1.
  • Tens: 0 + 9 + 1 = 10 — write 0, carry 1.
  • Hundreds: 3 + 1 = 4 — write 4.

307 + 98 = 405

Second check: 405 − 307 = 98

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98 + 98196
105 + 98203
136 + 98234
172 + 98270
203 + 98301
239 + 98337
268 + 98366
307 + 98405
348 + 98446
376 + 98474
402 + 98500
453 + 98551
485 + 98583
536 + 98634
578 + 98676
647 + 98745

FAQ

What is 307 + 98?

307 + 98 = 405

How do you check that 307 + 98 = 405?

Subtract one addend from the sum: 405 − 98 = 307, and 405 − 307 = 98. Getting the other addend back means the sum is right.

How many carries are there in 307 + 98?

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 98 + 307 the same as 307 + 98?

Yes. Addition is commutative, so both give 405; the column looks the same with either number on top.

See Also