4, Lesson 4, Unit 5, Grade 6, OpenUp icon
Instructional Activity

Missing Numbers

Lesson 4. Unit 5. Grade 6 Open Up Resources

Open Up Resources15 min(s)

This Instructional Activity is a part of the Lesson 4, Unit 5, Grade 6. Students deepen their understanding of regrouping by tackling problems that are more challenging and that prompt them to notice and use structure. Students build on both their work with whole-number differences (such as 1,000 - 256) to find differences such as 1 - 0.256. To add and subtract digits, they may think in terms of bundling and unbundling base-ten units, but there are also other opportunities to use structure here.

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