Double Number Line: Percent of a Number

"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?