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Mrs. Farias

Subtract Across Zero Magic

Year Groups: 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))

Instructions for Pupils

frame-label Take one away from each number to create a simplified problem with 99 in the top number, which makes subtraction easy! flexcard Create the simplified problem and solve.

Teacher Notes (not visible to pupils)

Supplement Activity for Eureka/Bluebonnet Math Module 5, Lesson 18.

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