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Addition up to three digits: fill in the missing digits

Free printable Grade 3 math worksheet for "Addition up to three digits: fill in the missing digits" — practice addition: three digits. No-prep, print or assign online.

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

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.

Math
Number Sense & Operations
Grade 3
Worksheets
Ages 8–9
medium

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.

Answer Key

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

How to use this worksheet

  1. Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
  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.

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