O/L past papers › 2015
English medium · held December 2015
All 47 questions from Paper I and Paper II, with what each one tests. Try any of them free in Gedara Sir to check your answer, with step-by-step working.
Convert metres to kilometres
Answer: 2 km
💡 What it's asking: Every 1000 metres make one kilometre, so count the thousands.
✅ 2 km × 1000 = 2000 m. ✓
සෑම මීටර 1000 කින්ම කිලෝමීටරයක් සෑදේ; දහස් ගණන් කරන්න.
Solve a one-step linear equation
Answer: x = 4
💡 What it's asking: Five equal x's make 20, so one x is a fifth of 20.
✅ 5 × 4 = 20. ✓
x පහක් එකතු වූ විට 20 කි; එබැවින් එක් x එකක් 20 න් පහෙන් එකකි.
Multiply algebraic terms using index laws
🔒 Answer & steps: try it free in Gedara Sir→Percentage of an amount of money
🔒 Answer & steps: try it free in Gedara Sir→An element common to multiples of 2 and of 3
🔒 Answer & steps: try it free in Gedara Sir→Convert a base-two number to base ten
🔒 Answer & steps: try it free in Gedara Sir→Change the subject of a linear formula
🔒 Answer & steps: try it free in Gedara Sir→Evaluate a simple logarithm
🔒 Answer & steps: try it free in Gedara Sir→Time from distance and uniform speed
🔒 Answer & steps: try it free in Gedara Sir→Third angle of a triangle
🔒 Answer & steps: try it free in Gedara Sir→Profit after a percentage increase
🔒 Answer & steps: try it free in Gedara Sir→LCM of two algebraic expressions
🔒 Answer & steps: try it free in Gedara Sir→Factorise a trinomial quadratic
🔒 Answer & steps: try it free in Gedara Sir→Probability of the complement of a union of exclusive events
🔒 Answer & steps: try it free in Gedara Sir→Income tax with a tax-free allowance
🔒 Answer & steps: try it free in Gedara Sir→Amount after two years compound interest
🔒 Answer & steps: try it free in Gedara Sir→Ratio and first term of a geometric progression
🔒 Answer & steps: try it free in Gedara Sir→Solve a linear inequality
🔒 Answer & steps: try it free in Gedara Sir→Intercept of a line through a given point
🔒 Answer & steps: try it free in Gedara Sir→Angle using parallel lines and an isosceles triangle
🔒 Answer & steps: try it free in Gedara Sir→Unknown entries from a matrix equation
🔒 Answer & steps: try it free in Gedara Sir→Cone radius from circumference, then height by Pythagoras
🔒 Answer & steps: try it free in Gedara Sir→Side length from equiangular triangles
🔒 Answer & steps: try it free in Gedara Sir→Sum of n terms of a geometric progression
🔒 Answer & steps: try it free in Gedara Sir→Side from sin 30° and a tangent ratio
🔒 Answer & steps: try it free in Gedara Sir→Evaluate using the cube of a binomial
🔒 Answer & steps: try it free in Gedara Sir→Angle using the alternate segment theorem
🔒 Answer & steps: try it free in Gedara Sir→Ratio of sphere surface to cylinder curved surface
🔒 Answer & steps: try it free in Gedara Sir→Ratio of triangle areas with midpoints and parallels
🔒 Answer & steps: try it free in Gedara Sir→Sketch locus for a point on a side equidistant from two vertices
🔒 Answer & steps: try it free in Gedara Sir→Fractions of library books donated, given and sold
🔒 Answer & steps: try it free in Gedara Sir→Petal shapes from sectors in a square: area, perimeter, beads
🔒 Answer & steps: try it free in Gedara Sir→Cumulative frequency curve of masses: median and quartiles
🔒 Answer & steps: try it free in Gedara Sir→Export income ratios and a food stock for soldiers
🔒 Answer & steps: try it free in Gedara Sir→Grid without replacement and a tree diagram for bacteria
🔒 Answer & steps: try it free in Gedara Sir→Assessment tax, rent advance, shares and dividend comparison
🔒 Answer & steps: try it free in Gedara Sir→Graph of a quadratic; read a range and estimate a surd
🔒 Answer & steps: try it free in Gedara Sir→Quadratic from a rectangle and square; reject a root
🔒 Answer & steps: try it free in Gedara Sir→Bearings and trigonometric tables for a tree and well
🔒 Answer & steps: try it free in Gedara Sir→Simultaneous equations for uniforms; algebraic fraction cost
🔒 Answer & steps: try it free in Gedara Sir→Cylinder space and sphere radius; log table calculation
🔒 Answer & steps: try it free in Gedara Sir→Savings as an arithmetic progression; change after day 26
🔒 Answer & steps: try it free in Gedara Sir→Construct equilateral triangle, circle touching a side, tangent, rhombus
🔒 Answer & steps: try it free in Gedara Sir→Modal class and mean ticket price; income and break-even
🔒 Answer & steps: try it free in Gedara Sir→Venn diagrams of clinic patients with subsets
🔒 Answer & steps: try it free in Gedara Sir→Isosceles triangle with bisector: congruence, angles, parallel lines
🔒 Answer & steps: try it free in Gedara Sir→Angles with tangents in terms of x; isosceles triangle
🔒 Answer & steps: try it free in Gedara Sir→