Addition (4 and 5-Digit) Worksheets Adding Money Worksheets. Practice adding money amounts on these math printables. (Estimated levels: 3rd, 4th, and 5th grades) 3-Digit Addition. If 4-digits is a bit too much for your students, try jumping down to the 3-digit addition PDFs. 2-Digit Addition Problems. This page features basic 2-Digit addition with regrouping.