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Mrs. Farias

Subtract with Chip Model

Grades: 2nd Grade
Subjects: Math
Standards: Add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. (Math.2.4(B))

Student Instructions

Follow the steps on the first 3 pages to solve using the Chip Model. 1. move Build only the greater number using the chip dots. 2. move If you need to unbundle a ten, cross it out then move the 10 ones box to the ones place. Take away the smaller number. 3. frame-label Count up what is left from the place values and type the difference. flexcard Tell if you needed to unbundle a 10.

Teacher Notes (not visible to students)

Supplement Activity for Eureka/Bluebonnet Math Module 4, Lesson 13.

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