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Name Practice 9-4 Estimating Quotients Estimate each product. 1. 37_13 ⫼ 5_78 ⫽ 4. 12_34 ⫼ 5_59 ⫽ 7. 67_15 ⫼ 7_27 ⫽ 10. 71_45 ⫼ 7_89 ⫽ 13. 26_14 ⫼ 2_38 ⫽ 6 2 10 9 13 Sample answers are shown. 2. 25_12 ⫼ 6_14 ⫽ 4 3. 49_45 ⫼ 6_12 ⫽ 7 9 ⫽ 5. 43_23 ⫼ 5_25 ⫽ 9 6. 8_13 ⫼ 2__ 3 10 8. 55_59 ⫼ 7_16 ⫽ 8 9. 19_67 ⫼ 4_18 ⫽ 5 7 ⫼ 3_ 4 ⫽ 11. 15__ 12. 79_47 ⫼ 8_58 ⫽ 10 4 10 9 14. 40_89 ⫼ 7_35 ⫽ 6 15. 58_13 ⫼ 19_56 ⫽ 3 16. Number Sense Tran wants to cut strips of paper that are 2_14 in. wide. His sheet of paper is 11_12 in. wide. He estimates that 11_12 ⫼ 2_14 ⫽ 6, so he can cut 6 strips from each sheet of paper. Is his estimate an overestimate or an underestimate? Explain. Practice 9-4 Sample answer: 6 is an overestimate because Tran rounded the width of the paper up and the width of the strips down. 17. Writing to Explain Eliza uses 2_78 feet of yarn in each gift basket she makes. Explain how to estimate how many baskets Eliza can make if she has 22 feet of yarn. Sample answer: Divide 22 by 2_78 . Use compatible numbers to estimate: 21 ⴜ 3 ⴝ 7, so she has enough yarn to make at least 7 gift baskets. 18. Geometry The area of this rectangle is 257_14 sq in. What is the best estimate of side length w? A 66,000 in. B 50 in. C 25 in. 257 14 sq in. 1 10 2 in. w D 5 in. © Pearson Education, Inc. 6 19. Critical Thinking What estimation method did you use to find the length of side w in Problem 18? Sample answer: I used compatible numbers: 250 ⴜ 10 ⴝ 25. Topic 9 45