Loading…
Example 3.28 from Prealgebra, 3.2 Add Integers
The temperature in Buffalo, NY, one morning started at below zero Fahrenheit. By noon, it had warmed up What was the temperature at noon?
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.
We are asked to find the temperature at noon.
| Write a phrase for the temperature. | The temperature warmed up 12 degrees from 7 degrees below zero. |
| Translate to math notation. | −7 + 12 |
| Simplify. | 5 |
| Write a sentence to answer the question. | The temperature at noon was 5 degrees Fahrenheit. |
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
The temperature in Chicago at 5 A.M. was below zero Celsius. Six hours later, it had warmed up What is the temperature at 11 A.M.?
How did it go?