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        4.  The temperature of a water sample is 15oC.  During an experiment, the temperature of the water increased by 16oC.  What was the final temperature of the water?
 

       5.  If a thermometer is numbered every 5 degrees and the temperature reading is exactly in the middle of the 25-degree and 30 degree markings, what is the temperature of the sample?

       6.  THINK ABOUT IT  If the outside temperature dropped from 7oC to -1oC, what was the total temperature change?  Explain how you found your answer.