Help your 1st grader build a strong math foundation with the IXL Addition 1st Grade Math Workbook! --The 112-page first grade math workbook features carefully crafted problems to help your child learn and practice addition facts, addition strategies, adding one- and two-digit numbers, word problems, and more 1st grade math concepts. Exercises also include vibrant illustrations to bring math learning to life for grade 1 learners. --IXL has been a trusted leader in education for over 25 years. Used by more than 15 million students worldwide and trusted by over 1 million teachers, IXL is the most popular online learning platform in the U.S. Backed by over 75 scientific studies, IXL’s comprehensive, curriculum-aligned K-12 program is proven to help every learner succeed.