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Adding Mixed Numbers: Introduction and Practice

This lesson introduces students to adding mixed numbers and provides ample practice opportunities. Topics covered include adding the wholes and parts, checking for same denominators, and adding the numerators. Includes a pizza party activity.

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Adding Mixed Numbers: Introduction and Practice

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  1. Year 5 FractionsLesson 3Adding mixed numbersMastery SpecilaistsAmy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith

  2. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Review: 3 + 6 = 8 8 9 8

  3. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Chen answered the question like this: Is Chen correct? Explain your answer.

  4. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith

  5. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Review: can you give the answer as a mixed number? 4 + 5 = 7 7

  6. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith New learning:

  7. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith New learning:

  8. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith New learning: What is the same / different about this question? • Add the wholes • Add the parts • Are the denominators the same? • Add the numerators.

  9. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith New learning: Denominators are the same • Add the wholes • Add the parts.

  10. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Practise: • Add the wholes • Add the parts • Are the denominators the same? • Add the numerators.

  11. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Practise:

  12. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Practise:

  13. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith DON’T FORGET! • Add the wholes • Add the parts • Are the denominators the same? • Add the numerators.

  14. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith New learning: What do you notice? 3 • Add the wholes • Add the parts • 3a. Are the denominators the same? • 3b. USE EQUIVALENCE TO MAKE THE DENOMINATORS THE SAME • 4. Add the numerators.

  15. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Practise: 6

  16. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith Practise: Pizza party!

  17. Amy Stokell, Natalie Ruddell, Valda Varadinek-Skelton, Vicky Smith What if…? • Subtract the wholes • Subtract the parts • 3a. Are the denominators the same? • 3b. USE EQUIVALENCE TO MAKE THE DENOMINATORS THE SAME • 4. Subtract the numerators. 2

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