Using 10% to Find Percentages of a Number

This video tutorial explains how to calculate percentages using 10% as a starting point. It demonstrates the method through six examples, showing how to find percentages that are multiples of 10 and how to use 10% to calculate 5%. The video concludes with a challenge to apply the method to find 65% of 80.

How do you calculate 45% of 60 using 10%?

What is the process to find 95% of 20?

Using the methods learned, how would you calculate 65% of 80?