This is a series of worksheets to review customary and metric length measurement. Each worksheet has students read measurements on customary and metric rulers (no rulers necessary - included on worksheets), make conversions within a system, and estimate the lengths of objects in their lives. Designed to be done periodically after students have been taught a short length unit. Excellent real world application of fraction and decimal concepts. Great for integrating math with science activities! All questions tied to Common Core standards. Appropriate intervention for students that need additional review and support. Worksheets can also be used as mini-assessments. Also includes one page that is blank so teachers can continue to create more worksheets if students need more practice.