Addition with Regrouping: 3,579 + 3,579

Addition with Regrouping Calculator
First addend
Second addend

What is 3,579 + 3,579?

Answer

3,579 + 3,579 =
7,158

With regrouping: 3 carries — into the tens, the hundreds and the thousands

3,579 + 3,579 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
3 5 7 9
+3579
7158

Column by column: 3,579 + 3,579

  • Ones: 9 + 9 = 18 — write 8, carry 1.
  • Tens: 7 + 7 + 1 = 15 — write 5, carry 1.
  • Hundreds: 5 + 5 + 1 = 11 — write 1, carry 1.
  • Thousands: 3 + 3 + 1 = 7 — write 7.

3,579 + 3,579 = 7,158

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Column additions with 3,579

ExampleSum
3,579 + 3,5747,153
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3,579 + 3,5767,155
3,579 + 3,5777,156
3,579 + 3,5787,157
3,579 + 3,5797,158
3,580 + 3,5797,159
3,581 + 3,5797,160
3,582 + 3,5797,161
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3,584 + 3,5797,163

FAQ

What is 3,579 + 3,579?

3,579 + 3,579 = 7,158

How do you check that 3,579 + 3,579 = 7,158?

Subtract one addend from the sum: 7,158 − 3,579 = 3,579. Getting the other addend back means the sum is right.

How many carries are there in 3,579 + 3,579?

3 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.

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