Interest (Simple) - Base Formula to Variable Formula (Level 1)

The topics in this unit focus on introducing simple interest, principle, rate, and time, and how to calculate any of them given the others. Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Interest (Simple) - Base Formula to Variable Formula

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


Given the simple interest formula, how would you solve for Rate?

I=PRTR=?I=PRT\\ R = ?