Unit 2 - Lesson 6 - Grade 2: Illustrative Mathematics

Diego and Elena drew base-ten diagrams to find the value of 82 - 9. Compare Deigo’s work to Elena’s.What is the same?

Diego and Elena drew base-ten diagrams to find the value of 82 - 9. Compare Deigo’s work to Elena’s.What is different?

Diego and Elena drew base-ten diagrams to find the value of 82 - 9. Tyler used equations to show his thinking.82 - 982 = 70 + 1212 - 9 = 370 + 3 = 73Diego says Tyler’s work matches his diagram.Elena says Tyler’s work matches her diagram.Who do you agree with? Explain.