This Problem Set is a part of the Lesson 9, Unit 4, Grade 2. In this lesson, students deepen their understanding of addition of numbers within 100. They demonstrate the relationship between their drawings and the addition algorithm. Students represent the composition of 10 ones as 1 ten when adding a two-digit addend to a three-digit addend on a labeled place-value chart.
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8 min(s)
5 min(s)