# Double Number Line: Percent of a Number

- Author:
- David Cox

"Play" with the applet below and then answer the questions below the applet.

1. What is 30% of 40?
2. What is 60% of 90?
3. What is 50% of 250?
4. What is 3% of 12?
5. If you know what 10% of 60 is, how can you quickly find 30% of 60?
6. If you know what 10% of 80 is, how can you quickly find 5% of 80?
7. What does "percent" actually mean?