This worksheet consists of a set of questions on addition where students are required to add 6-digit and 5-digit numbers without regrouping. Students use the count on strategy or the relationship between addition and subtraction to find the missing number in this worksheet. However, they do not need to regroup numbers to get to the answer in add 6-digit and 5-digit numbers without regrouping worksheet. This worksheet is about practicing the column method in which numbers are written one on top of another. In this method, students use their place value understanding to solve the problems.