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Translate and simplify:
Translate and simplify:
To solve applications with subtraction, we will use the same plan that we used with addition. First, we need to determine what we are asked to find. Then we write a phrase that gives the information to find it. We translate the phrase into math notation and then simplify to get the answer. Finally, we write a sentence to answer the question, using the appropriate units.
The temperature in Chicago one morning was degrees Fahrenheit. A cold front arrived and by noon the temperature was degrees Fahrenheit. What was the difference between the temperature in the morning and the temperature at noon?
We are asked to find the difference between the morning temperature and the noon temperature.
| Write a phrase. | the difference of 73 and 27 |
| Translate to math notation. Difference tells us to subtract. | |
| Then we do the subtraction. |
 |
| Write a sentence to answer the question. | The difference in temperatures was 46 degrees Fahrenheit. |
The high temperature on in Boston was degrees Fahrenheit, and the low temperature was degrees Fahrenheit. What was the difference between the high and low temperatures?
The difference is 19 degrees Fahrenheit.
The weather forecast for June in St Louis predicts a high temperature of degrees Fahrenheit and a low of degrees Fahrenheit. What is the difference between the predicted high and low temperatures?
The difference is 17 degrees Fahrenheit.
A washing machine is on sale for Its regular price is What is the difference between the regular price and the sale price?
We are asked to find the difference between the regular price and the sale price.
| Write a phrase. | the difference between 588 and 399 |
| Translate to math notation. | |
| Subtract. |
 |
| Write a sentence to answer the question. | The difference between the regular price and the sale price is $189. |
A television set is on sale for Its regular price is What is the difference between the regular price and the sale price?
The difference is $149.
A patio set is on sale for Its regular price is What is the difference between the regular price and the sale price?
The difference is $136.
| Operation | Notation | Expression | Read as | Result |
|---|---|---|---|---|
| Subtraction | seven minus three | the difference of and |
Use Subtraction Notation
In the following exercises, translate from math notation to words.
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