Challenge your young math wizards to solve this add hundredths and thousandths less than 10 with regrouping worksheet. While adding decimals, students use the relationship between addition and subtraction to find the missing number. They also need to regroup numbers in add hundredths and thousandths less than 10 with regrouping worksheet utilizing the relationship between ones, tenth, hundredth, thousandth, etc., To get to the result. In each problem, the numbers are laid out in the vertical format. In this format, pair of digits in each successive place are tackled one by one. This helps students follow a structured approach.