Grade Three Workbook/Worksheets

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Grade 3 Math Practice Workbook and Worksheets for Ages 8-9 -372 Pages & 1457 Practice Problems – Promotes and Strengthens Math Skills – Comprehensive Overview of Each Topic – Created by Leading Math Teachers – Meets all Common Core Standards

Is your 3rd-grade child struggling to learn math?

Are you worried your child won’t pass the 3rd grade?

Do you wonder how to help your child improve their math skills?

Math is one of the most challenging subjects for 3rd-grade children. Yet without a solid math foundation, children often struggle throughout their education and have difficulty passing from one grade to the next.

Research shows that children begin to excel in math when they have access to engaging, fun, progressive, and interactive resources. Mental Math’s Third Grade Workbook follows a standard math curriculum, and helps your child easily learn concepts of Numeration, Addition & Subtraction of Whole Numbers, Multiplication & Division Facts, Fractions & Decimals, Geometry, Patterns and Relationships, Measurement, Data, Graphs, and Probability.

The #1 choice by teachers, parents, and students throughout the country, our Third Grade Math Workbook and Worksheets ensure that your child will quickly master each math concept and develop the proficiency needed to move to the next level.

You will get a PDF (24MB) file

Why choose our math workbooks and worksheets?

1. Created by Math Experts

Developed by experienced educators to give your child a proven math foundation that leads to better grades, stronger skills, and long-term academic success.

2. Fully Aligned with 3rd Grade Curriculum

Unlike random or low-quality workbooks, every lesson is standards-based and builds skills step-by-step for real understanding—not memorization.

3. 372 Pages & 1457 Practice Problems

One of the largest and most complete 3rd-grade math workbooks available. Includes thousands of engaging problems that build confidence and mastery.

4. Includes Assessments and Answer Keys

Parents and teachers can easily measure improvement, spot learning gaps, and guide children with clarity and confidence.

5. Superior Quality at an Affordable Price

More pages, more problems, and more value than any competitor. Premium content without the premium price—ideal for homeschooling, tutoring, or classroom use.

6. 100,000+ Happy Students

For the past five years, more than 100,000 happy parents and students have trusted us and enjoyed our high-quality.

Choose From Over 6 Worksheets That Best Suit Your  Child’s Skill Level and Unique Needs

Stories of Transformation From  Parents Like You…

As a homeschooling parent, I’ve tried many math resources over the years. Mental Math’s worksheets are by far the best I’ve come across. They cover all math topics, are well-structured, and keep my kids engaged.

— Rachel M.

I’m so glad I found Mental Math’s worksheets. My daughter used to dread math, but now she enjoys it thanks to their fun and interactive workbooks and worksheets. It is also very affordable, which is a big plus.

— John L

As a busy parent, I’ve used several math programs with my children. Mental Math’s worksheets stand out because they are clear, organized, and easy to follow. They strengthen skills, & make practice enjoyable.

Grade Three Workbook/Worksheets

Grade 3 Math Practice Workbook and Worksheets for Ages 8-9 -372 Pages & 1457 Practice Problems – Promotes and Strengthens Math Skills – Comprehensive Overview of Each Topic – Created by Leading Math Teachers – Meets all Common Core Standards