5Many situations can be represented with INTEGERS Many situations can be represented with INTEGERS. Sometimes the situation must be represented by a Positive Integer, sometimes by a Negative Integer.EXAMPLES:An elevator moves down 3 floors = -3Sue earned $5 for babysitting = +5The stock market fell 20 points = -20The balloon rose 30 feet into the air = +30
7What integer represents the planes height What integer represents the planes height? What about the submarine’s height?
8Representing INTEGERS (-) or (+) EX 1:All of the following situations below can be represented by the integer 18, except which one?The population increased by 18.Jon earned $18 by pet sitting18 gallons of water flowed out of the water tank.The football team gained 18 yards.
9Representing INTEGERS (-) or (+) EX 2:A company produced 5,000 shoelaces in 5 hours on Monday. On Tuesday, it produced 5,250 shoelaces in 5 hours. Which integer represents the CHANGE in number of shoelaces produced from Monday to Tuesday?25025-25-250
10Representing INTEGERS (-) or (+) EX 3:A hawk flew up to a height of 46 feet and then dove 18 feet toward the ground. Which integer describes the hawk’s height now?6428-28-64
11Representing INTEGERS (-) or (+) EX 4:Nicole went snow skiing. When she left the slopes on Saturday, the temperature was ˚. The temperature dropped 11 degrees by the time the sun went down that evening. What was the temperature when the sun went down?8˚-8˚-11˚-14˚
12Representing INTEGERS (-) or (+) EX 5:A submarine descended 300 feet below sea level and then descended another 800 feet. What is the final depth of the submarine?1,100 ft500 ft-500 ft-1,100 ft
13Representing INTEGERS (-) or (+) EX 6:At 6 a.m. the temperature was 4˚ below zero. By noon, the temperature had increased 10 degrees. What was the temperature at noon?- 14˚8˚- 4˚6˚
14Write the Integer Described 1. Sam lost eleven pounds after working out and dieting. 2. Sally found thirty-five seashells on the beach during her vacation. 3. Tom picked twenty-eight limes at the orchard. 4. The stock market dropped forty-one points after the bad economic news yesterday. 5. Fred grew twenty-one watermelons on his farm.
15Ticket OutWhich of these scenarios is not represented by the integer 15?Martin found fifteen dollars in the Target parking lotAfter 6 hours, Emilio had washed fifteen carsCameren used fifteen gallons of gas travelling to Mississippi.Charlie sold his couch for fifteen dollars more than he paid for it.