Learners hone their math skills with this add and subtract different decimal places less than 100 without regrouping worksheet. When adding or subtracting decimals, students understand the need to align the decimal points and use zeros as stop signs. They do not need to regroup numbers to find the answer on this worksheet. In each problem, the numbers are laid out in the horizontal format. Students should try to use different strategies involving composing and decomposing numbers to solve these problems. This will help them develop flexibility and fluency.