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Multiplying Fractions and Evaluating Expressions

Learn how to multiply fractions and simplify expressions. Practice evaluating fractions and solving problems.

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Multiplying Fractions and Evaluating Expressions

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  1. Transparency 2 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 2-4b Objective Multiply fractions

  4. Example 2-4b Review Vocabulary Greatest common factor The greatest of the common factors of two or more numbers

  5. Lesson 2 Contents Example 1Multiply Fractions Example 2Multiply Fractions and Whole Numbers Example 3Simplify Before Multiplying Example 4Evaluate Expressions

  6. Example 2-1a Write problem Find  Multiply numerators  Multiply denominators 1  1 Simplify numerator 5  6 Simplify denominator Since numerator is 1 we now the fraction is in simplest terms Answer: 1/4

  7. Example 2-1b Find  Answer: 1/4

  8. Example 2-2a Write problem Find  Put 1 as a denominator on 7 Multiply numerators  Multiply denominators  Simplify numerator  Simplify denominator Since numerator is larger than denominator, simplify with calculator Answer: 2/4

  9. Example 2-2b Find  Answer: 2/4

  10. Example 2-3a Write problem Find  Multiply numerators Multiply denominators  Simplify numerator   Simplify denominator 6  3 Numerator is smaller than denominator, must find GCF  3 63 Divide GCF of 3 into numerator and denominator Answer: 3/4

  11. Example 2-3b Find  Answer: 3/4

  12. ALGEBRA Evaluate Example 2-4a Write problem Replace p with  Replace q with 3  8 4  9 Multiply numerators  12 24 Multiply denominators  12 36 Numerator is smaller than denominator, must find GCF Answer: Divide GCF of 12 into numerator and denominator 4/4

  13. ALGEBRA Evaluate Example 2-4b * Answer: 4/4

  14. End of Lesson 2 Assignment

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