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This tool was designed for students having difficulty understanding the steps for addition and subtraction regrouping. The ones, tens, hundreds, and thousands digits are each a different color, including when numbers are carried or borrowed. Arrows show the direction to go when regrouping. Cross out lines and commas are available on the necessary sheets and must be manually put into place.
There are ten sheets to this Excel workbook. I set it up this way in order not to always have to change cells for another size or type of problem. The sheets are:
Add Two Digits & One Digit with Regrouping
Two Digit Addition with One Regrouping
Two Digit Addition with Double Regrouping
Three Digit Addition with Regrouping
Three Digit Vertical Addition with Regrouping
Subtract One Digit from Two Digits
Subtracting Two Digits from Two Digits
Two Digit Subtraction with Regrouping
Three Digit Subtraction with Regrouping
Borrowing Across Zeroes
Because of not wanting zero to always appear and not disappear when needed, it is necessary to type a capital O for the digit zero when you need to use zero.
Enter numbers only on the vertical problem. Entries will automatically appear on the horizontal problem. This is to assist students to understand how regrouping works regardless of the direction of the problem.
On the sheets for subtraction, extra narrow columns are added to accommodate digits that are borrowed. All digits that are carried or borrowed are in a smaller font. When using the subtraction sheets, only enter your numbers in the larger cells of the vertical problem.
This workbook, while set up on Excel 2016, is set to be compatible with Excel 97-2003, 2007, 2010, 2013.
I hope this will help you in your teaching as much as it has helped me in my tutoring.