Arithmetic Grade Three

Lesson Thirty-eight: Regrouping Across Zeroes

This is the kind of problem we're going to work with in this lesson. 

    400
   - 84
  -------
With a problem like this we generally do a lot of regrouping.

Here's the problem done step-by-step.
ORIGINAL PROBLEM
STEP ONE: Borrow one from the hundreds and adjust the tens
STEP TWO: Borrow one from the tens column and adjust the ones
STEP THREE: Subtract the columns.

Click here to go to next page