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Transparency 3. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 3-3b. Objective. Write fractions in simplest form. Example 3-3b. Vocabulary. Equivalent fractions. Fractions that have the same value. Example 3-3b. Vocabulary. Simplest form.

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  1. Transparency 3 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 3-3b Objective Write fractions in simplest form

  4. Example 3-3b Vocabulary Equivalent fractions Fractions that have the same value

  5. Example 3-3b Vocabulary Simplest form When the greatest common factor (GCF) of the numerator and denominator is 1

  6. Lesson 3 Contents Example 1Write Fractions in Simplest Form Example 2Write Fractions in Simplest Form Example 3Use Fractions to Solve a Problem

  7. Write in simplest form. Example 3-1a Prime factor both the numerator and denominator 12 45 2 5 2 6 9 3 3 3 Circle factors that are common in each number and write as factors 3 GCF = 3 Multiply common factors There is only one common factor so it is the GCF 1/3

  8. Write in simplest form. Example 3-1a GCF = 3 Divide the numerator by the GCF of 3 Divide the denominator by the GCF of 3 Answer: 1/3

  9. Write in simplest form. Answer: Example 3-1b 1/3

  10. Write in simplest form. Example 3-2a Prime factor both the numerator and denominator 40 64 2 2 2 20 2 32 10 2 2 16 8 5 2 2 4 Circle factors that are common in each number and write as factors 2 Multiply common factors 2  2  2 Identify as GCF GCF = 8 8 2/3

  11. Write in simplest form. Example 3-2a GCF = 8 Divide the numerator by the GCF of 8 Divide the denominator by the GCF of 8 Answer: 2/3

  12. Write in simplest form. Answer: Example 3-2b 2/3

  13. MUSICTwo notes form a perfect fifth if the simplified fraction of the frequencies of the notes equals If note Hertz and note Hertz, do they form a perfect fifth? Example 3-3a Form fraction Prime factor both numbers to find the GCF of 294 and 392 3/3

  14. Example 3-3a 392 2 294 2 3 147 2 196 49 98 7 2 7 49 7 7 Circle factors that are common in each number and write as factors Multiply the common factors 2  7  7 Identify as GCF GCF = 98 98 3/3

  15. MUSICTwo notes form a perfect fifth if the simplified fraction of the frequencies of the notes equals Example 3-3a GCF = 98 Do they form a perfect fifth? 294  98 392  98 Divide the numerator by the GCF of 98 Divide the denominator by the GCF of 8 3 4 Answer: Yes they form a perfect fifth 3/3

  16. Answer: Example 3-3b * MARBLESIn a bag of 96 marbles, 18 of the marbles are black. Write the fraction of black marbles in simplest form. 3/3

  17. End of Lesson 3 Assignment

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