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Add two numbers up to three digits — free printable Grade 3 math worksheet

Add two numbers up to three digits

Free printable Grade 3 math worksheet for "Add two numbers up to three digits" — practice addition: three digits. No-prep, print or assign online.

This worksheet provides practice for Grade 3 students to add two numbers up to three digits, reinforcing their understanding of place value and addition strategies. Teachers can use this resource to strengthen students' computational skills and build confidence in solving medium-difficulty addition problems. Ideal for classroom practice, homework, or assessment preparation in third-grade math.

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

Learning objectives

  • Add two numbers up to three digits accurately using place value understanding
  • Apply addition strategies to solve three-digit addition problems
  • Demonstrate fluency in adding two three-digit numbers without regrouping or with regrouping

Answer Key

Answer key for Add two numbers up to three digits — free printable Math worksheet

How to use this worksheet

  1. Click “Download Worksheet” to get the PDF — free with a KiwiBee account (up to 25 downloads a month).
  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.

Frequently asked questions

Is the “Add two numbers up to three digits” worksheet free?

Yes. “Add two numbers up to three digits” is a free printable Math worksheet. Sign in with a free KiwiBee account to download the PDF — it includes up to 25 downloads a month.

What grade or age is this Math worksheet for?

It's designed for Grade 3 (ages 8–9), covering Addition: three digits.

Does it come with an answer key?

Yes — a matching answer key is included so you can grade it in seconds.

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