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Example 3.13 from Prealgebra, 3.1 Introduction to Integers
Translate into an expression with integers:
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Look for key phrases in each sentence. Then look for words that indicate negative signs. Don’t forget to include units of measurement described in the sentence.
| ⓐ | The temperature is 12 degrees Fahrenheit below zero. |
| Below zero tells us that 12 is a negative number. |
| ⓑ | The football team had a gain of 3 yards. |
| A gain tells us that 3 is a positive number. | yards |
| ⓒ | The elevation of the Dead Sea is 1,302 feet below sea level. |
| Below sea level tells us that 1,302 is a negative number. | feet |
| ⓓ | A checking account is overdrawn by $40. |
| Overdrawn tells us that 40 is a negative number. |
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Translate into an expression with integers:
The football team had a gain of
How did it go?