Stinnette_19-20 Integer Word Problems and Representations

1.) A golfer plays 5 holes. On each of the 3 holes he has a gain of four strokes. On each of the 2 holes he has a loss of four stokes. Each gain in strokes can be represented by a positive integer and each loss in strokes can he represented by a negative integer. Find the total net change in strokes. 1 4 20 -4 2. What math sentence is represented? -15 -3 -15 x 5 = -3 -15 = -5 5 x (-3) = -15 3. What subtraction problem is represented? -8 - 5= -13 -3 - 5 = -8 -8 - (-5) = -3 -3 - (-5) = 2 4. What math sentence is represented? 4 - (-6) = -2 -6 - 4 = -2 4 + (-6) = -2 4 + (-6) = 10 5. If it is 5º outside and the temperature will drop 17º in the next six hours, how cold will it get? 22 degrees 12 degrees -22 degrees -12 degrees 6. The elevation of Mt. Everest is 29,028 feet. The elevation of the Dead Sea is –485 feet. What is the difference in the elevation between Mt. Everest and the Dead Sea? 29,513 ft 7. A scuba diver swam 96 feet beneath the surface of the lake. He then climbs up 49 feet. What is his depth now? -47 ft 8. While watching a football game, Lin Chow decided to list yardage gained as positive integers and yardage lost as negative integers. After these plays, Lin recorded 14, –7, and 9. What was the net gain or loss? 16 yards 9. Jim decided to go for a drive in his car. He started out at 0 miles per hour (mph). He then accelerated 20 mph down his street. Then, to get on the highway he accelerated another 35 miles per hour. A car was going slow in front of him so he slowed down 11 mph. He then got off the highway, so he slowed down another 7 mph. At what speed is he driving? 44 mph 37 mph 17 mph 7 mph 10. In a 12 hour period the temperature dropped 48 degrees. What integer represents the change in temperature each hour? -4 degrees 11. Jenny is buying greeting cards at the hallmark store. She is paying with her bank card. She bought 12 cards at a price of $2.50 a piece. Write an integer that represents the change in her bank account after she pays for the cards. -30 dollars 12. What math sentence is represented? 8 x (-9) = -72 -72/ 9 = 8 -72 = -9 -9 x 8 = -72