Module 5: Mathematics
Commercial arithmetic, percentages, and time.
Use this workbook to practice core KCSE communication skills and record evidence of progress.
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SECTION: MATHEMATICS
MODULE: 5
Part A: Units
1. Commercial arithmetic
a. Profit and loss
b. Discounts
c. Simple interest
d. Hire purchase
e. Taxation
2. Percentages
a. Percentage calculations
b. Increase and decrease
c. Applications in real life
3. Time
a. Time calculation
b. Speed, distance and time
c. Timetables
Part B: Project
Apply commercial arithmetic and time calculations in real life.
Project Title: Everyday Business Math
Objective: Use profit, discounts, interest, and time calculations in a practical scenario.
Project Instructions:
- 1. Choose a real-life buying or selling scenario.
- 2. Calculate profit or loss and a discount applied.
- 3. Compute simple interest or hire purchase cost.
- 4. Solve one speed-distance-time problem or timetable example.
- 5. Consult your coach where necessary.
Evidence to Submit:
- • Calculations for profit/loss and discount.
- • Interest or hire purchase computation.
- • Time or timetable solution.
Submission
Part C: Training Others
Teach a peer about commercial arithmetic or time calculations.
Guidance:
- • Explain profit, loss, or discounts with examples.
- • Demonstrate a simple interest calculation.
- • Guide a speed-distance-time problem.
Reflection:
- • What concept did you teach?
- • What was difficult to explain?
- • What did you understand better after teaching?
Submission
Part D: Assessment
Competency Levels:
1 = Expectations not met
2 = Partially met
3 = Satisfactorily met
4 = Excellently met
Self-assessment:
- • Profit, loss, and discounts:
- • Interest and hire purchase:
- • Percentage applications:
- • Time and speed calculations:
Coach assessment:
- • Profit, loss, and discounts:
- • Interest and hire purchase:
- • Percentage applications:
- • Time and speed calculations:
Submission
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Keep your learning rhythm steady and record your reflections as you progress.