Multi-Digit Addition Worksheets – 2 to 5 Digit Addition Practice (21,600 Problems) This comprehensive addition worksheet bundle is designed for Grades 3–5 students who need consistent and structured practice with 2-digit, 3-digit, 4-digit, and 5-digit addition. With a total of 600 pages and 36 exercises on each page, students get 21,600 addition problems for thorough skill development and mastery. What’s Included: 150 pages of 2-digit addition 150 pages of 3-digit addition 150 pages of 4-digi