Subtract big numbers column by column — borrow a ten when the top digit is too small.
Multi-digit subtraction goes column by column, and when the top digit is too small the child borrows a ten from the next column to keep going. Doing the regrouping step by step builds place-value understanding behind the standard algorithm. Distinct from column addition. Best for Grades 2–4.
A free, no-signup, no-ads math game for Grades 2–4 — practising subtraction, regrouping, borrowing, place-value, multi-digit. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
More like this: Place Value Port · Column Crunch · Times Table Tower.