Add Two 4-Digit Numbers with Regrouping: Missing Numbers Worksheet

Students use the count on strategy or the relationship between addition and subtraction to find the missing number in this worksheet. They also need to regroup numbers to get to the answer in add two 4-digit numbers with regrouping worksheet. As the worksheet uses a horizontal format, it allows for more creativity when it comes to how the student solves the problem. In contrast, in the vertical format, students usually employ the standard method to solve.