Subtracting Strategically

Students use estimation to check the reasonableness of a difference before calculating the exact difference.

By Amplify Classroom

Grades: 3rd Grade

Subject: Math

Learning goals: Today’s Goals • Strategically select strategies or algorithms to subtract within `1,000`. • Use estimation to check the reasonableness of a difference. Materials Lesson Resources: Unit 3 PDF, Spinner; Classroom materials: paper clips