Does your child know how to add tenths and hundredths less than 100? Invite them to practice this concept here. To ensure that each decimal has the same number of digits while adding decimals, students align the decimal points and insert additional zeros to the right of the number. Students then add digits at each place to find the sum. 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.