Our 3rd grade addition worksheets feature a mix of "mental addition problems" designed for students to solve in their heads, as well as multi-digit column addition questions that provide practice in computational skills. This combination helps students develop both their mental math abilities and their proficiency in traditional addition methods, ensuring a well-rounded approach to mastering addition concepts.
Select a Topic
139 Worksheets
Mental Addition
Add 1 & 2-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add 1 & 2-digit numbers (missing addend)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Complete one hundred (missing addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add a 2-digit & two 1-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add 3 & 1-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Whole tens
Add whole tens to 2-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole tens to 2-digit numbers (missing addend)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add two whole tens and two 1-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole tens (3 addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole tens (4 addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Whole hundreds
Add whole hundreds (2 addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole hundreds (3 addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole hundreds (missing addends)
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add to complete whole thousands
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Whole thousands
Add whole thousands and hundreds
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add whole thousands to a number
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Column-form addition
Add two 2-digit numbers, no carrying
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add two 2-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add two 3-digit numbers, no carrying
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add two 3-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add three 3-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add four 3-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add two 4-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add three 4-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Add four 4-digit numbers
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
Addition word problems
Grade 3 addition word problems
Download the corresponding math worksheet for free to enhance your child's foundational math skills.
See More
