Choose your game mode (Timed Challenge or Practice) and difficulty level.
A bank deposit scenario appears showing the principal amount, interest rate, and time period.
Watch the animated growth chart to visualize how the deposit grows each year.
Read the question — you'll be asked for either the interest earned or the total balance.
Use the simple interest formula: Interest = Principal × Rate × Time.
Select the correct answer from four multiple-choice options.
Correct answers add to your score and build your streak.
In Timed mode, answer as many as possible before the 90-second clock runs out.
Visual Growth Chart
An animated bar chart shows your deposit growing year by year. Gold bars represent accumulated interest on top of your gray principal — making abstract math concepts tangible.
Bank Statement Interface
Each round presents a deposit scenario styled like a real bank statement, showing principal, interest rate, and time period. Players learn to read financial information naturally.
Two Question Types
Each round randomly asks either 'How much interest is earned?' or 'What is the total balance?' — reinforcing both the interest formula and the relationship between interest and total.
Timed and Practice Modes
Race against a 90-second clock in Timed Challenge, or learn at your own pace with unlimited Practice mode. Both modes track accuracy and streaks.
Three Difficulty Levels
Easy uses small round numbers and short time periods. Medium scales up amounts and adds varied rates. Hard introduces large deposits, long durations, and non-trivial multiplication.
The Simple Interest Game is an educational banking simulation that teaches players how simple interest works. Each round presents a deposit scenario with a principal amount, annual interest rate, and time period, accompanied by an animated growth chart that visually shows the money growing over time. Players must calculate either the interest earned or the total balance using the formula Interest = Principal × Rate × Time. The game features a premium dark banking theme with gold accents that makes learning about finance feel sophisticated and engaging.
Makes the abstract concept of interest earning concrete an...
Makes the abstract concept of interest earning concrete and visual through animated growth charts.
Teaches the fundamental I = P × R × T formula through rep...
Teaches the fundamental I = P × R × T formula through repeated, varied practice.
Builds percentage and multiplication skills in a real-wor...
Builds percentage and multiplication skills in a real-world financial context.
The bank statement layout familiarizes players with how f...
The bank statement layout familiarizes players with how financial information is typically presented.
Alternating between interest and total questions reinforc...
Alternating between interest and total questions reinforces that Total = Principal + Interest.
Difficulty progression naturally scales from basic multip...
Difficulty progression naturally scales from basic multiplication to multi-step percentage calculations.
Simple interest is calculated only on the original deposit (principal). The formula is Interest = Principal × Rate × Time. For example, $100 at 5% for 2 years earns $100 × 0.05 × 2 = $10 in interest.
The gray portion of each bar represents your original deposit (principal), and the gold portion on top represents the accumulated interest for that year. You can see the gold growing larger each year.
Start with Easy if you're new to interest calculations — it uses small round numbers ($100–$500) with simple rates (5% or 10%) for 1–3 years. Move to Medium and Hard as you get comfortable.
You earn 1 point for each correct answer. In Timed mode, try to answer as many as possible in 90 seconds. The game tracks your best score for each difficulty and mode combination.
To reinforce that the total balance equals the original deposit plus the interest earned (Total = Principal + Interest). This helps players understand both parts of the equation.
This game focuses specifically on simple interest (I = P × R × T). Simple interest is the foundation for understanding compound interest, so mastering it here is an excellent first step.