Monday, April 10, 2017

Estimation Subtraction

>3.OA.8
Module 9  Lesson 3
Differentiation Activity

Students draw one gray card and one white card.  They then write down the estimated difference between the two. The student who is within 2 of the exact difference wins a point.  The first student to score 3 points is the winner.

Subtraction Cards
Recording Sheet (optional)

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