# Absolute Value

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Absolute Value

Name ________________________________________ Date __________________ Class __________________ LESSON 1-3 Absolute Value Practice and Problem Solving: D Graph each number on the number line. The first one is done for you. 1. −5 3. −7 2. 4 4. 5 Use the number line to find each absolute value. The first one is done for you. 4 5. |4| _________________ 6. |−5| _________________ 7. |7| _________________ 8. |5| _________________ 9. |−4| _________________ 10. |6| _________________ Complete. 11. The absolute values of −5 and 5 are the _________________. 12. The integers −5 and 5 are called _________________. Use the table for exercises 13–22. Temperatures at a Ski Resort Monday Tuesday Wednesday Thursday 5°F 2°F below zero below zero 0°F Friday 2°F 3°F above zero below zero Write a negative integer to show the amount each temperature is below zero. The first one is done for you. −5 13. 5°F below zero ____ 14. 2°F below zero ____ 15. 3°F below zero ____ 16. Can 0°F be written as a negative integer? ____ Find the absolute value of each temperature below zero. The first one is done for you. 5 17. |−5| = ___ 18. |−2| = ____ 19. |−3| = ____ Complete. 20. On which day was the temperature the coldest? _________________ 21. On which day was the temperature the warmest? _________________ 22. When a number is negative, its opposite is also its _____________________________________. Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 15 5. 4 LESSON 1-3 6. 5 Practice and Problem Solving: A/B 7. 7 1−4. 8. 5 9. 4 5. 6 10. 6 6. 3 11. same 7. 8 12. opposites 8. 6 13. −5 9. 3 14. −2 10. 5 15. −3 11. The absolute values of 6 and −6 are the same. 16. no 12. opposites 17. 5 13. −20 18. 2 19. 3 14. −6 20. Monday 15. −8 21. Thursday 16. 20 22. absolute value 17. 6 Reteach 18. 15 19. Monday; the greatest negative number shows the greatest amount spent. 1. c 20. |3 + 10| = |13| = 13; |3| = 3 and |10| = 10; 3 + 10 = 13; 13 = 13 3. b 21. two; possible answer: −4 and 4 5. c 2. a or d 4. a Practice and Problem Solving: C 6. 3 1. 2,300 7. 5 2. Elan; 2,910 8. 7 3. Pietro; 2,080 9. 6 4. Bill, Jorge 10. 0 5. Bill, Jorge 11. 2 6. Elan 12. 10 7. +186 13. 8. 324 3 4 14. 0.8 9. Their absolute values are the same. 15. Sample answer: The absolute value of a number is the number’s distance from 0 on the number line. Since the distance is positive or 0, absolute value is always positive or 0. For example |−5| = 5 and |5| = 5. 10. −125 and 125; Negative deviations would decrease by 100; positive differences would increase by 100. Practice and Problem Solving: D 1−4. Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 349