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Math 801A : Mathematical Operations – Subtracting Fractions

Math 801A : Mathematical Operations – Subtracting Fractions. Mathematics Essentials. March 7th, 2017. Lesson Introduction. Today I will... subtract fractions concretely, pictorially, and symbolically subtract fractions in problem situations using the most appropriate method.

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Math 801A : Mathematical Operations – Subtracting Fractions

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  1. Math 801A:Mathematical Operations – Subtracting Fractions Mathematics Essentials March 7th, 2017

  2. Lesson Introduction Today I will... • subtract fractions concretely, pictorially, and symbolically • subtract fractions in problem situations using the most appropriate method

  3. Subtracting Fractions with Like Denominators • These are the easiest types of fractions to subtract • Subtract the numerators and keep the same denominator!

  4. Subtracting Fractions with Unlike Denominators Steps to take to solve problems with unlike denominators: • Draw a picture or use fraction strips • Find a “common denominator” - make the pictures have the same number of equal parts (same denominators) • Subtract the numerators and use the common denominator

  5. SubtractingFractions with Unlike Denominators E.g. - E.g. - _ _ E.g.

  6. Simplifying/Reducing Fractions https://www.youtube.com/watch?v=kyzcHkFMinA https://www.youtube.com/watch?v=fp0wJ9d3pKE

  7. Common Denominator – Butterfly Solution

  8. Mixed Numbers

  9. Homework! Greatest Common Factor Worksheet. Adding/Subtracting Fractions Assignment (pg. 40 all).

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