A New Algorithm

Students relate the expanded form algorithm to the standard algorithm to subtract within `1,000` with decomposition.

By Amplify Classroom

Grades: 3rd Grade

Subject: Math

Learning goals: Today’s Goals • Build fluency with algorithms to subtract within `1,000`. • Language Goal: Compare expanded form and standard algorithms for subtraction. (Speaking and Listening) Materials Lesson Resources: Visual Display PDF, Subtraction Algorithms (sample); Classroom materials: chart paper, markers, Subtraction Algorithms chart (teacher made)