This add thousandths less than 1 with regrouping worksheet consists of a set of questions on addition, which help students develop fluency. Students find the missing number while adding 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 thousandths less than 1 with regrouping worksheet. As the worksheet uses the column method, it is helpful in getting students toward higher accuracy, especially with bigger numbers and in scenarios where regrouping is required.