Lesson: Estimating Length: Customary Units Holt Mathematics • Course 1 • JUMPMath 3.2 • Part 2 of 2 • Assessment & Practice • US Edition • JUMPMath 2.2 • Part 2 of 2 • Assessment & Practice • US Edition • Math in Focus • Singapore Math • Grade 3 • Volume B • Common Core • Go Math! • Grade 2 • Common Core • Math Connects • Grade 4 • Student Edition • Math Connects • Grade 3 • Student Edition • enVisionmath2.0 • Grade 2 • Volume 2 • Common Core • JUMPMath 4.2 • Part 2 of 2 • Assessment & Practice • US Edition