This subtract hundredths and thousandths less than 10 with regrouping worksheet consists of a set of questions on subtraction, which help students develop fluency. When subtracting decimals on this worksheet, students align the decimal points and use zero as a placeholder. They must also regroup the numbers to find the difference. In this worksheet, students practice solving problems written in the horizontal format. How numbers are laid out in a problem affects the method a student employs to solve it. Therefore to develop actual fluency and mastery of multiple strategies, students must practice different formats.