3rd grade three-digit addition worksheets

Your child adds three-digit numbers within 1,000, such as 458 + 276, regrouping ones and tens as needed.

Common Core 3.NBT.A.2 (Number and Operations in Base Ten)

Sample problems

  1. Sample 159 + 70 = ?

    Answer: 129

  2. Sample 2The table shows how many pumpkins each farm stand on Mill Road sold in October. How many pumpkins did the farm stands sell in all?

    Answer: 666 pumpkins

  3. A bit harderThe table shows how many tickets the school play sold each night. How many tickets did the play sell in all?

    Answer: 623 tickets

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Three-digit addition