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Addition up to three digits: fill in the missing digits

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Addition up to three digits: fill in the missing digits — free printable Grade 3 math worksheet

This worksheet provides practice in three-digit addition by requiring students to fill in missing digits to complete sums correctly. Teachers can use it to reinforce place value concepts and improve students' problem-solving skills in addition. Ideal for Grade 3 classrooms, it supports mastery of addition up to three digits with a medium difficulty level.

Learning objectives

  • Solve addition problems involving three-digit numbers with missing digits.
  • Apply place value understanding to identify and fill in missing digits in addition equations.
  • Demonstrate accuracy in multi-digit addition by completing incomplete number sentences.

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 Addition up to three digits: fill in the missing digits — free printable Math worksheet

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