This worksheet invites students to add tenths and hundredths less than 1 without regrouping, which helps them become proficient in addition. While adding decimals, students use the relationship between addition and subtraction to find the missing number. They do not need to regroup numbers in add tenths and hundredths less than 1 without regrouping worksheet. In this worksheet, numbers are laid one on top of another (vertical format). This encourages students to use the inherent place value structure to solve the problems.