Add Two 5-Digit Numbers with Regrouping: Missing Numbers Worksheet

This worksheet invites students to add two 5-digit numbers with regrouping, which helps them become proficient in addition. 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 5-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.