Column Addition: 70,312 + 8,042

Addition with Regrouping Calculator
First addend
Second addend

What is 70,312 + 8,042?

Answer

70,312 + 8,042 =
78,354

No regrouping: each column is added on its own

70,312 + 8,042 in a column. No carries.
7 0 3 1 2
+8042
78354

Column by column: 70,312 + 8,042

  • Ones: 2 + 2 = 4 — write 4.
  • Tens: 1 + 4 = 5 — write 5.
  • Hundreds: 3 + 0 = 3 — write 3.
  • Thousands: 0 + 8 = 8 — write 8.
  • Ten thousands: nothing to add — write 7.

70,312 + 8,042 = 78,354

Second check: 78,354 − 70,312 = 8,042

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FAQ

What is 70,312 + 8,042?

70,312 + 8,042 = 78,354

How do you check that 70,312 + 8,042 = 78,354?

Subtract one addend from the sum: 78,354 − 8,042 = 70,312, and 78,354 − 70,312 = 8,042. Getting the other addend back means the sum is right.

How many carries are there in 70,312 + 8,042?

None: no column adds up to 10 or more, so every digit of the sum is written straight away.

Is 8,042 + 70,312 the same as 70,312 + 8,042?

Yes. Addition is commutative, so both give 78,354; the column looks the same with either number on top.

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