6, Lesson 15, Unit 1, Grade 4, EngageNY icon
Problem Set

Problem Set

Lesson 15. Unit 1. Grade 4 EngageNY

EngageNY10 min(s)

This Problem Set is a part of the Lesson 15, Unit 1, Grade 4. In this lesson, students subtract multi-digit numbers with multiple decompositions, including decomposing numbers with multiple zeros (1,000 and 1,000,000), and use addition to check their answers. When decomposing multiple zeros, they use place value chips to model the decomposition and relate their representations to the standard algorithm to better support conceptual understanding of the algorithm. They use tape diagrams to represent the part-whole relationship and the unknown, and then apply the use of tape diagrams to model a subtraction word problem with five decompositions.

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