Help your students master 3-digit addition with regrouping using the expanded form algorithm!

These print-and-go math worksheets give students structured practice in adding 3-digit numbers using expanded form, helping them build a strong foundation in place value understanding and addition accuracy. Perfect for reinforcing how numbers break apart and combine, this resource strengthens both conceptual understanding and procedural fluency.

The grid format on each worksheet provides an added scaffold for neatness and alignment, supporting students who benefit from visual organization while learning to carry or regroup correctly.

These Expanded Form Addition Worksheets are ideal for:
✔️ Independent math practice
✔️ Small group or guided math lessons
✔️ Homework or skill review
✔️ Differentiated instruction and intervention

Teachers love how these worksheets make expanded form addition clear, visual, and accessible—helping every learner feel confident in their addition skills!

Be sure to check out my other Expanded Form Addition Products!

• Addition with Regrouping Google Slides | Expanded Form Lessons (2–4 Digits)
• Expanded Form Addition Worksheets Bundle | 3 & 4 Digit With & Without Regrouping
• Expanded Form Addition Worksheets | 3- & 4-Digit Regrouping Math Practice
• Expanded Form Addition Worksheets | 3 & 4-Digit Without Regrouping Math Practice