Add 10 within 20: Horizontal Addition Worksheet

When a number is added to 0, the result is the number itself. Students love adding numbers that end in zeros. With a set of problems on add 10 within 20, this worksheet improves their accuracy. As the worksheet uses a horizontal format, it allows for more creativity when it comes to how the student solves the problem. In contrast, in the vertical format, students usually employ the standard method to solve.