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Add and subtract three-digit numbers

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Add and subtract three-digit numbers — free printable Grade 3 math worksheet

This worksheet provides practice in adding and subtracting three-digit numbers, focusing on mixed operations to reinforce computational fluency. Teachers can use it to assess students' understanding of place value and regrouping strategies in both addition and subtraction. Ideal for Grade 3 math instruction, the exercises support skill development in multi-digit arithmetic and problem-solving.

Learning objectives

  • Add three-digit numbers accurately using place value understanding
  • Subtract three-digit numbers with and without regrouping
  • Apply mixed operations to solve word problems involving three-digit numbers

How to use this worksheet

  1. Select “Sign in / Sign up to download”, then sign in with Google or email to get the PDF from KiwiBee Printables.
  2. Print at home or in class for Grade 3; it's no-prep, with no extra materials needed.
  3. Use the included answer key to mark it in seconds.

Good for

ClassworkHomeworkWarm-upCentersSmall groups

Answer Key

Answer key for Add and subtract three-digit numbers — free printable Math worksheet

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