Addition with Regrouping: 864 + 136

Addition with Regrouping Calculator
First addend
Second addend

What is 864 + 136?

Answer

864 + 136 =
1,000

The sum is longer than the addends: 3 carries — into the tens, the hundreds and the thousands; the last one makes a new digit

864 + 136 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
8 6 4
+136
1000

Column by column: 864 + 136

  • Ones: 4 + 6 = 10 — write 0, carry 1.
  • Tens: 6 + 3 + 1 = 10 — write 0, carry 1.
  • Hundreds: 8 + 1 + 1 = 10 — write 0, carry 1.
  • Thousands: the carried 1 — write 1.

864 + 136 = 1,000

Second check: 1,000 − 864 = 136

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864 + 1361,000
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4,864 + 1365,000
9,864 + 13610,000

FAQ

What is 864 + 136?

864 + 136 = 1,000

How do you check that 864 + 136 = 1,000?

Subtract one addend from the sum: 1,000 − 136 = 864, and 1,000 − 864 = 136. Getting the other addend back means the sum is right.

How many carries are there in 864 + 136?

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.

Is 136 + 864 the same as 864 + 136?

Yes. Addition is commutative, so both give 1,000; the column looks the same with either number on top.

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