Main Idea and New Vocabulary Key Concept: Inverse Property of Multiplication Example 1: Find a Multiplicative Inverse Key Concept: Divide Fractions Example 2: Divide Fractions and Mixed Numbers Example 3: Divide Fractions and Mixed Numbers Example 4: Real-World Example Lesson Menu
Divide rational numbers. multiplicative inverses reciprocals Main Idea/Vocabulary
Key Concept
Find a Multiplicative Inverse Write the multiplicative inverse of . Write as an improper fraction. Since the multiplicative inverse of is . Answer: Example 1
Write the multiplicative inverse of – . B. C. D. Example 1 CYP
Key Concept 3
Divide Fractions and Mixed Numbers Find . Write in simplest form. The multiplicative inverse of Divide –2 and 8 by their GCF, 2. = Multiply. Answer: Example 2
Find . Write in simplest form. A. B. C. D. Example 2 CYP
Divide Fractions and Mixed Numbers Find . Write in simplest form. The multiplicative inverse of Divide 4 and 8 by their GCF, 4. Example 3
Divide Fractions and Mixed Numbers Multiply. Answer: Example 3
Find . Write in simplest form. A. B. C. 8 D. 36 Example 3 CYP
TELEVISION A television station shows a holiday movie repeatedly for hours. It takes 150 minutes to show the movie with commercial breaks. How many times does the television station show the movie that day? Example 4
Multiply to convert 150 minutes to hours. Divide by common factors and units. Multiply. Example 4
Multiply by the multiplicative inverse of which is Divide by common factors. Example 4
Answer: The television station shows the movie 5 times. Simplify. Answer: The television station shows the movie 5 times. Example 4
COSTUMES Each elf costume for the school play requires yards of fabric COSTUMES Each elf costume for the school play requires yards of fabric. How many elf costumes can be made from a bolt of fabric that contains 13 yards? A. 5 costumes B. 8 costumes C. 13 costumes D. 21 costumes Example 4 CYP