Interest, Commision and Pay

Applications of Percentages: Simple Interest & Commission

What’s Included:

Scaffolded learning objectives and tiered success criteria
Worked examples for simple interest and commission
Simple interest using formula
Commission calculations and commission + base salary problems
Converting percentages to decimals
Working with time in years, including converting months to years
Fluency practice problems
Real-world financial scenarios
Multi-step and backward-working challenge problems
Error analysis and correction activities
Interpretation and reasoning questions
Self-assessment and reflection
Complete answer key

Description:

Help students apply their knowledge of percentages to practical financial situations involving simple interest, commission and pay.

This resource begins by connecting prior knowledge of percentages and proportional relationships to new applications of those skills. Students are introduced to the simple interest formula and the commission formula, with clear worked examples showing how to identify variables, substitute values and solve.

The practice then progresses from basic fluency questions to real-world scenarios involving car loans, savings, real estate commissions and salary packages. Students also develop their mathematical reasoning by comparing commission structures and considering whether a higher percentage rate always results in greater earnings.

The resource also includes error analysis, challenge problems requiring students to work backwards to find a missing rate, and self-assessment activities to help students identify areas where they need further practice.

Ideal for classwork, homework, independent practice, revision, or as part of a unit on percentages and financial mathematics.