This worksheet strengthens students' accuracy and strategic flexibility while they add and subtract decimals less than 1 with regrouping. Students know the significance of aligning the decimal points and using zeros as placeholders while adding or subtracting decimals. They must regroup the numbers in this worksheet to get the answer. 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.