Student will learn how to solve percent problems, where the task is to determine the whole, the part, or the percent. Here's an example of finding the whole:

40% of what number is 80?

Here's an example of finding the part:

What is 4% of 110?

Some finding the part problems can be done mentally. For example:

What is 15% of 300?

It's easy to find 10% of 300. That's just 30. So 5% must be half that, 15. Therefore, 15% of 30 must be 30 + 15 = 45. Finally, here's an example of finding the percent:

What percent of 315 is 126?

Watch these Khan Academy videos:

Do these Khan Academy exercises:

Next, give your students these challenges:

- Overlapping Again by NRICH
- Math Kangaroo 2016 Levels 7-8 Problem #29 by STEM4all
- Number Lines by NRICH

Conclude by leading this investigation:

Ninja Bed Bugs (multiplication)

by MathPickle

7.RP.A.3: Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.