Math Curriculum

Level C
Unit: Number Base Ten (Decimals)
Key Lesson 6.5.4 Adding and Subtracting Decimals with Many Non-Zero Digits

Lesson topic: Adding and subtracting decimals

Instructor Materials

  • Teacher guide
  • Slides
  • Practice Problems resource
  • CCRS standard: 6.NS.3
  • Learning goal: Add or subtract decimals with multiple non-zero digits, and explain (orally) the solution
    method. Interpret a description (in written language) of a real-world situation involving decimals, and write an addition or subtraction problem to represent it. Recognize and explain (orally) that vertical calculation is an efficient strategy for adding and subtracting decimals, especially decimals with multiple non-zero digits.
  • 6.5 Assessment and Practice Problems

Student Materials

Related Lessons


If students need additional lessons before this key lesson, use these supplemental lessons.




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