Three Digit Addition Worksheets (100-999)

📚 Grade 3-4⭐ hard📄 20 problems

Free three digit addition worksheets for Grade 3-4. Practice adding numbers from 100 to 999.

Worksheet Preview

341 + 849 = ____

297 + 363 = ____

176 + 207 = ____

297 + 249 = ____

397 + 955 = ____

712 + 909 = ____

117 + 460 = ____

149 + 444 = ____

947 + 415 = ____

392 + 939 = ____

936 + 683 = ____

864 + 905 = ____

516 + 566 = ____

965 + 800 = ____

407 + 200 = ____

427 + 258 = ____

901 + 984 = ____

260 + 428 = ____

557 + 594 = ____

213 + 777 = ____

About This Worksheet

This free printable three digit addition worksheets (100-999) is perfect for Grade 3-4 who are learning addition. Each worksheet contains 20 carefully designed problems to help students practice and master their addition skills.

All worksheets include a complete answer key, making them ideal for teachers, parents, and homeschoolers. Simply download the PDF and print as many copies as you need - it's completely free!