3-Digit Addition with Three Addends Worksheets | 200 Printable Worksheets

Help students build confidence in multi-digit addition with this collection of 200 printable worksheets featuring 3-digit addition with three addends. Designed for Years 3–4 Maths (Ages 7–9), this resource provides structured practice using both grid and column formats.
Each worksheet includes 18 carefully designed addition problems, giving students consistent practice with 3,600 total exercises. Problems include both with and without regrouping to develop fluency, accuracy, and problem-solving skills.

What’s Included
• 200 printable worksheets
• 3-digit addition with three addends
• Grid and column formats
• 18 exercises per page
• 3,600 total addition problems
• Practice with and without regrouping
• No prep, ready to print

Skills Students Will Practice
• Multi-digit addition fluency
• Adding three 3-digit numbers
• Regrouping (carrying) strategies
• Place value understanding
• Accuracy and mathematical confidence

Perfect For
• Classroom lessons
• Daily math practice
• Homework assignments
• Math centers
• Homeschool learning
• Extra skill reinforcement

Please note: This resource includes worksheets only. Answer keys are not included.