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Lauren Berrong

Student Instructions

2nd_Week 19_Math_Problem Solving: Start Unknown

1. Watch the video to think more about solving Start Unknown problems. 2. On the final page, read the word problem carefully. Use , , or to explain your thinking. 3. Click when you're ready to submit your work.

2nd Grade, Math
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2nd_Week 19_Math_Problem Solving: Start Unknown (Week 19, Lesson 5) 2.4B 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 2.7C represent and solve addition and subtraction word problems where unknowns may be any one of the terms in the problem Created by Lauren Berrong