Add Rational Numbers Using Algorithms and Number Lines

This Add Rational Numbers Using Algorithms and Number Lines video also includes:

Remind number crunchers that integers and rational numbers are related by using the Venn diagram shown in this video. It applies what students have learned about integers to all rational numbers. Reviewing absolute value, it shows how to add numbers with different signs, both with an algorithm and the number line. Extend the activity by having learners predict the sign before computing the answer.    

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CCSS: Designed
Classroom Considerations

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  • A good explanation of how to add to rational numbers with different signs
  • Applies the same algorithm as adding to integers with different signs

  • Provide extra practice with fractions and decimals
Common Core