Show it on a number line
Draw a number line between 47,000 and 48,000 and mark 47,382. Ask, "Which is it closer to?" Seeing the halfway point makes the 5-or-more rule make sense.
Why it works: showing first, practicing together, then letting kids try alone is the "gradual release" model teachers have relied on for decades (Pearson and Gallagher, 1983).
Try it with4.NBT.3 Fourth Grade Common Core LessonCommon Core LessonsOpen it →





















