Add and Subtract 4-Digit and 3-Digit Numbers with Regrouping: Horizontal Addition and Subtraction Worksheet

Subtraction is the inverse of addition and vice versa. Students apply this relationship to solve a set of problems in add and subtract 4-digit and 3-digit numbers with regrouping worksheet. This worksheet is about practicing with the horizontal format in which numbers are written side by side. To develop flexibility with numbers and operations, students need to have enough practice in this format and not just rely on the vertical/column method.