Help students master 3-digit addition using the Partial Sums strategy! Students break numbers into Hundreds, Tens, and Ones, then add each place to find the total — building real place value understanding. Print & go for morning work, centers, homework, or sub plans! Plus, a Reusable Template Page lets students use dice or UNO cards to create endless problems. WHAT'S INCLUDED:50 Worksheets No-Prep Worksheets (3-digit + 3-digit)50 Answer Keys Pages1 Reusable Template PageGrade Level : 2nd Grad