Problems Third Graders Have With Adding Numbers. Adding 3 or more numbers addition word problem worksheets these grade 1 math worksheets have word problems involving the addition of 3 or more single digit numbers. Learn how to solve addition word problems.

Morgan, a third grader, struggles with adding numbers that have two or more digits. Students should try to figure out the answers mentally without having to write down. The 3rd grade addition worksheets provide addition problems that uplift a student's mental math skill.