Math - Topic 9
Subtracting Two-Digit Numbers (regrouping)

Regrouping 1 Ten for 10 Ones
Models to Subtract Two and One-Digit Numbers
Subtracting Two and One-Digit Numbers
Models to Subtract Two-Digit Numbers
Subtracting Two-Digit Numbers
Using Addition to Check Subtraction
Problem Solving - Two-Question Problems


Always look in the ONES COLUMN FIRST!
Think, think, think... Is there more on top or more on the floor?

If there's more on top, there's no need to stop!
If there's more on the floor, then go next door and take ten more!
Yo, Yo!  Mr. Ten?  Can I borrow one?
He says YES!

Websites to Practice Topic 9 Skills
Fruit Shoot Subtraction - Click Level 5 or Level 6 or Level 7
Two - Digit Subtraction with Regrouping (step by step)
Two - Digit Subtraction