2nd grade three-digit addition & subtraction worksheets

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Second graders extend column addition and subtraction to three-digit numbers within 1000. The steps are the same ones they know from two-digit work. The sheets just add a hundreds column and mix addition with subtraction so the sign matters.

Free printable PDF worksheet, aligned to Common Core 2.NBT.B.7.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Solve each problem.

  1. 196 + 201 =

    Answer: 397

  2. 301 − 120 =

    Answer: 181

  3. 361 − 265 =

    Answer: 96

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on a 2nd grade sheet

The sample sheet above has 9 problems. Its answers run from 13 to 936.

Every version prints on US Letter or A4, with its answer key after the problems.

How to teach this

Have your child circle each sign before touching the numbers. Work right to left, one column at a time, saying each small fact aloud. If three digits feel heavy, cover the hundreds column with a finger, solve the rest, then reveal it.

Watch for: Kids do whatever the first problem did. These pages alternate, so check each sign before starting. Kids drop the second regroup when a problem needs two. Write every carry or trade above its column.

Common questions about 2nd grade three-digit addition & subtraction

Is three-digit regrouping really a 2nd grade skill?
Yes. Second graders add and subtract within 1000 using place-value strategies, and full fluency is expected in 3rd grade. These sheets cover both stages.
Why are addition and subtraction mixed on one page?
Alternating problems make your child read each sign, the exact spot where autopilot mistakes happen on single-operation pages.

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Aligned to Common Core 2.NBT.B.7. Reviewed by the One more sheet team. Content version 240, updated September 2026.

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