Summary

• Description:

  The MS Word document comprises CEKENAS Mathematics Alt A Paper 1 2026 Pre-Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a CEKENAS Form 4 Mathematics Alternative A Paper 1 examination evaluating core mathematical principles in algebra, geometry, trigonometry, matrices, and calculus foundations. Excellent for KCSE candidate preparation, available as a PDF download with complete marking scheme answers.

  • Month Administered: March/April 2026
  • Duration: 2 ½ Hours
  • Total Marks: 100 Marks
  • Number of Questions: 24 (Questions 1–24)
  • Structure: Section I (50 marks, compulsory Questions 1–16) and Section II (50 marks, choice of five questions from 17–24 [10 marks each]).

  It covers the following topics:

  • Section I
    • Numerical evaluation and order of operations
    • Number theory and test of divisibility by 11
    • Indices and exponential simultaneous equations
    • Linear scale factor, area scale factor, and perimeter of similar figures
    • Linear inequalities in one variable
    • Trigonometric ratios and sine rule in quadrilaterals
    • Interior and exterior angles of polygons
    • Vector operations and magnitude calculations
    • Trigonometric equations and complementary angles
    • Geometric construction of triangles using ruler and compasses
    • Algebraic expressions simplification
    • Angles of elevation and cliff height trigonometry
    • Commercial arithmetic (Commission and basic salary calculations)
    • Use of mathematical tables for squares and square roots
    • Statistics (Histograms and frequency density calculations)
    • 3D geometry (Drawing the net of a cuboid)
  • Section II
    • Coordinate geometry of straight lines (Perpendicular lines, parallel lines, and inclination angles)
    • Matrix algebra and commercial applications (Determinants, matrix inverses, and simultaneous equations)
    • Mensuration (Volume, surface area, and slant height of a frustum of a cone)
    • Geometrical constructions (Trapezium construction, perpendiculars, and circular arcs)
    • Circle theorems and cyclic quadrilaterals (Angle properties of circles)
    • Kinematics and motion (Velocity-time graphs, total distance, deceleration, and relative speed of approaching trains)
    • Statistics and measures of central tendency (Frequency distribution tables, mean, and median feed costs)
    • Transformations in the Cartesian plane (Rotations, negative scale factor enlargement, and reflection across $y=0$)
• File Size:

  261.76 KB
• Length:

  16 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  MATHEMATICS
• Posted By:

  Caleb_Peter

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