Add 3 to Numbers within 20: Vertical Addition Worksheet

Children practice adding 3 to numbers within 20 with this worksheet. Once students have understood the concept of counting, they should learn to add numbers. Add 3 to numbers within 20 worksheet provides plenty of practice with addition. 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.