DIGITAL and PRINT Copies of Grade 4 Add and Subtract Multi-Digit Whole Numbers. This product includes notes and interactive and independent work. The following topics in BOTH DIGITIAL and PRINT Versions: (Some of the example problems are NOT the same in both products). The Properties of AdditionMental Math Strategies (Counting On, Compensation, and Breaking Apart) Finding Sums and DifferencesAdding Multi-digit Whole NumbersSubtracting Multi-digit Whole NumbersSubtracting Across ZeroThe Inte