This add and subtract thousandths less than 100 with regrouping worksheet consists of tasks to help your young mathematician develop fluency with addition and subtraction. Students find the missing number while adding or subtracting decimals by using the relationship between addition and subtraction. To reach the answer, they also use the relationship between ones, tenths, hundredths, thousandths, etc., To regroup the numbers in add and subtract thousandths less than 100 with regrouping 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.