Model times ten
Write 3.5 on a place value chart and multiply by 10 out loud: "Every digit slides one place to the left." Then do ×100 and ÷10. Kids watch the digits move instead of the decimal point, which is the real idea.
Why it works: handing over the work step by step, from teacher to student, is one of the most widely used teaching frameworks (Pearson and Gallagher, 1983).
Try it with5.NBT.1 Fifth Grade Common Core LessonCommon Core LessonsOpen it →























