Not all roles available for this page.
Sign in to view assessments and invite other educators
Sign in using your existing Kendall Hunt account. If you don’t have one, create an educator account.
A scooter costs $160.
For each question, show your reasoning.
Complete the table so that each row has a description and two different expressions that answer the question asked in the description. The second expression should use only multiplication. Be prepared to explain how the two expressions are equivalent.
| description and question | expression 1 | expression 2 (using only multiplication) |
|---|---|---|
| A one-night stay at a hotel in Anaheim, CA, costs $160. Hotel room occupancy tax is 15%. What is the total cost of a one-night stay? | ||
| Teachers receive a 30% educators' discount at a museum. An adult ticket costs $24. How much would a teacher pay for admission into the museum? | ||
| The population of a city was 842,000 ten years ago. The city now has 2% more people than it had then. What is the population of the city now? | ||
| After a major hurricane, 46% of the 90,500 households on an island lost their access to electricity. How many households still have electricity? | ||
| Two years ago, the number of students in a school was 150. Last year, the student population increased 8%. This year, it increased about 8% again. What is the number of students this year? |
We can write different expressions to calculate percent increase and decrease.
Suppose a new phone costs $360 and is on sale at 25% off the regular price. One way to calculate this is to first find 25% of 360, which is 90, and then subtract $90 from $360 to get the sale price of $270. These calculations can be recorded in this way:
Another way to represent this calculation is to notice that subtracting 25% of the cost is equivalent to finding 75% of the cost. Using the distributive property, we know that