Worked examples
Two examples
Example 1
A plumber charges $45 an hour plus a $60 visit fee. Which expression gives the cost for h hours?
- The hourly rate is multiplied by the hours: 45h.
- The fee is added once: + 60.
Answer: 45h + 60
Example 2
Kim has $200 and spends $25 a week. Which expression gives what is left after w weeks?
- She starts with 200.
- She loses 25 each week, w times: 25w.
Answer: 200 − 25w
Where this is taught: Algebra Practice 1, “7. Two steps in one phrase”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Tap your answer to each one, then press Check my answers at the bottom.Circle your answer to each one. The answer key, with the reasoning, is on the last page.