This webpage provides teachers and students with a collection of printable worksheets that are designed to improve students' addition skills in a fun and engaging way. The worksheets feature various missing addend problems with numbers that are multiples of ten, helping students develop a better understanding of place value and number sense. By completing these worksheets, students can improve their ability to add quickly and accurately, which is a fundamental skill that they will use throughout their academic and personal lives. For teachers, these worksheets offer an easy and effective way to assess students' understanding of addition and track their progress over time. Additionally, these worksheets can be used as homework assignments or in-class activities to supplement existing math lessons.