QR 101 · Course unit
Percentages: repair a budget decision
Compare discounted cost and simple interest.
Practice in MathBeasts (opens the existing external demo in a new tab)
Opens the existing MathBeasts demo in a new tab. Launched separately — activity there is not synced back and never affects sample progress or grades here.
- 01 Course challenge
- 02 Diagnostic
- 03 Targeted repair
- 04 Mastery & return
Original course work
Compare a $240 purchase discounted by 15% with saving $200 at 5% simple annual interest for 2 years. Show the amounts before making a decision.
Required support is still open. Demonstrate practice mastery in the required tools before checking the course challenges.
Unit prerequisite tools
Percentages
required
Not tested yet
Order of operations
diagnostic-recommended
Not tested yet
Fractions
on-demand
Available whenever needed