Subtract 9 within 20: Vertical Subtraction Worksheet

This subtract 9 within 20 worksheet consists of tasks to help your young mathematician develop fluency with subtraction. Students should learn how to subtract numbers once they have a solid understanding of addition. Subtract 9 within 20 worksheet offers a tonne of subtraction practice. 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.