Lesson Playlist: Word Problems: Adding Numbers up to 20 Mathematics • 1st Grade
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01:11Solving Word Problems with One-Digit Numbers by Finding the Unknown Addend
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00:50
Determining Whether to Add or Subtract to Solve Word Problems with One-Digit Numbers
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01:08
Writing Addition Equations with an Unknown for Word Problems Involving Numbers up to 20
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01:41
Determining the Unknown Whole Numbers in an Addition Equation
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01:34
Subtracting within 20 to Solve Word Problems Represented by Pictures
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02:47
Solving Word Problem Involving Addition of Numbers up to 9
