ADDITION+AND+SUBTRACTION+OF+INTEGERS

**__WORD PROBLEMS __** 5. The temperature at noon on a winter day was 8o C. At midnight, the temperature had dropped 15o. What was the temperature at midnight?
 * __ADDITION AND SUBTRACTION __**
 * 1) In Buffalo, New York, the temperature was ─14°F in the morning. If the temperature dropped 7°F, what is the temperature now?
 * 2) A submarine was situated 450 feet below sea level. If it descends 300 feet, what is its new position?
 * 3) George owes his friend Jeanne $3. If he borrows another $6, how much will he owe her altogether?
 * 4) Monica had an owl collection with 23 owls. She went on a trip to Europe where she bought 14 more owls. After she arrived, for her birthday she received 12 owls. How many owls does she have now?

6. A football team gained 6 yards on a first down, lost 15 yards on the second down, and gained 12 yards on the third down. How many yards do they need to gain on the fourth down to have a 10 yard gain from their starting position? 7. Steve has overdrawn his checking account by $27. His bank charged him $15 for an overdraft fee. Then he quickly deposited $100. What is his current balance?

8. Find the difference in height between the top of a hill 973 feet high and a crack caused by an earthquake 79 feet below sea level.

9. In Detroit the high temperatures in degrees Fahrenheit for five days in January were -12°, -8°, -3°, 6°, -15°. What was the average temperature for these five days?

10. In a laboratory experiment a mixture started at a temperature of−10°. First the temperature was raised 3° and then raised 7°. After two hours, the mixture temperature dropped 4° and then raised 6°. What was the final temperature?