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學生說明
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1. Solve for the total, show your thinking.
2. Check for quality and accuracy. Make changes as needed
3. Tap 
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教師備註 (學生不可見)
CCSS.MATH.CONTENT.2.OA.A.1 Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1.
