Students must understand the fundamental relationships between the digits in the numbers they are subtracting. They subtract the digits at the same places to get the difference of multi-digit numbers. There is lots of practice with this concept in subtract 5-digit numbers from 6-digit numbers without regrouping worksheet. 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.