Children use their math skills to complete this subtract 1-digit numbers from 3-digit numbers with regrouping worksheet. As students subtract multi-digit numbers, they often find the need to regroup numbers. They regroup 1 ten into 10 ones, 1 hundred into 10 tens, and so on. Help your students practice this concept and develop conceptual and strategic knowledge with subtract 1-digit numbers from 3-digit numbers with regrouping worksheet.