Looking for the BEST 1st grade word problems math worksheets and activities? These addition and subtraction word problems cover adding to, taking from, putting together, taking apart, comparison problems, unknown addends, unknown subtraction and MORE! This 4 week word problem unit is filled with no prep worksheets, posters, assessments and hands-on activities.This Word Problem Unit Includes:20 Days of 1st Grade Word Problems Worksheets and Activities3 Addition and Subtraction Word Problems Quizz