This Fluency Activity is a part of the Lesson 22, Unit 4, Grade 2. In this lesson, students apply the associative property to add up to four two-digit addends with totals within 200. Crossing a Ten prepares students for making a multiple of 10 as they solve problems with up to four addends.
Other Fluency Activities related to this standard
18 min(s)
15 min(s)