4th Grade Three-digit Addition Worksheets and Activities

In this addition worksheet, students add a 1-digit number and a 3-digit number. Some problems involve regrouping. Worksheet instructions: Find the sum for each problem below.

In this worksheet, students add a 1-digit number to a 3-digit number. Some problems involve regrouping, making it great for building fluency and number sense. Worksheet instructions: Find the sum for each problem below.