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Math Unit 9 lesson 5 Cool Down

年级： 2nd Grade

学科： Math

标准： Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers. (2.OA.B.2) (DOK 1) (2.OA.B.2.), 100 can be thought of as a bundle of ten tens — called a "hundred." (2.NBT.A.1.a.)

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Students type the correct answer in the text box. Responses are automatically graded. Illustrative Math 2nd Grade Unit 9 Cool down lesson 5

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Math Unit 9 lesson 5 Cool Down