Addition with Regrouping: 1,598 + 402

Addition with Regrouping Calculator
First addend
Second addend

What is 1,598 + 402?

Answer

1,598 + 402 =
2,000

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

1,598 + 402 in a column. Carries are the small circled digits above the columns.
1carry1carry1carry
1 5 9 8
+402
2000

Column by column: 1,598 + 402

  • Ones: 8 + 2 = 10 — write 0, carry 1.
  • Tens: 9 + 0 + 1 = 10 — write 0, carry 1.
  • Hundreds: 5 + 4 + 1 = 10 — write 0, carry 1.
  • Thousands: 1 + 1 = 2 — write 2.

1,598 + 402 = 2,000

Second check: 2,000 − 1,598 = 402

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Column additions with 402

ExampleSum
402 + 402804
427 + 402829
453 + 402855
468 + 402870
485 + 402887
498 + 402900
519 + 402921
536 + 402938
564 + 402966
578 + 402980
598 + 4021,000
602 + 4021,004
647 + 4021,049
683 + 4021,085
1,598 + 4022,000
4,598 + 4025,000
9,598 + 40210,000

FAQ

What is 1,598 + 402?

1,598 + 402 = 2,000

How do you check that 1,598 + 402 = 2,000?

Subtract one addend from the sum: 2,000 − 402 = 1,598, and 2,000 − 1,598 = 402. Getting the other addend back means the sum is right.

How many carries are there in 1,598 + 402?

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 402 + 1,598 the same as 1,598 + 402?

Yes. Addition is commutative, so both give 2,000; the column looks the same with either number on top.

See Also