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NAME ______________________________________________ DATE 5-3 ____________ PERIOD _____ Multiplying Rational Numbers (Pages 210–214) To multiply fractions, multiply the numerators and multiply the denominators. a b c d a b c d ac bd For fractions and , where b 0 and d 0, . Multiplying Fractions If fractions have common factors in the numerators and denominators, you can simplify before you multiply. Examples 1 2 a. Solve x . 5 3 2 b. Solve y . 3 4 5 2 3 y 4 5 1 2 x 5 3 12 53 2 15 or 3 21 / 45 2/ The GCF of 2 and 4 is 2. Divide 2 and 4 by 2. 31 25 3 10 or Try These Together Solve each equation. Write the solution in simplest form. 2 1 1. t 3 2. 4 35 21 g 5 4 2 6. m 18 3 1 3 3. c Practice Solve each equation. Write the solution in simplest form. 9 (3) h 4. 10 2 12 7. 5 a 15 3 10. p 3 3 4 1 3 5. d 2 11 9. 4k 9 6 12. r 5 4 8. n 3 5 15 3 11. w 21 20 12 18 2 12 13. What is the product of and ? 20 3 5 14. What is of 42? 8 1 15. Standardized Test Practice Jemeal has $75 to go shopping. She spends 3 of her money on CDs and 1 on food at the food court. About how much 8 money does she have left? A $54 B $41 C $33 D $24 15. B 6 10 20 10 8 3 5 7 4 5 4 Answers: 1. 1 2. 3 3. 3 4. 27 5. 3 6. 12 7. 4 8. 3 1 9. 21 10. 3 11. 3 12. 1 13. 2 14. 261 © Glencoe/McGraw-Hill 35 Glencoe Pre-Algebra