Description

What types of questions came in 1992 (Mathematics)

The main question types/topics that appeared in 1992

1) Number & numeration

• Prime factors / factor sets, union of sets, basic set ideas.

• Number bases (e.g., convert base 10 to base 5; value of a digit in a base number; perimeter with lengths given in base two).

• Approximation / significant figures (e.g., rounding to 3 s.f.).

2) Fractions, decimals, ratio & proportion

• Simplifying expressions involving fractions/decimals; converting decimals to fractions.

• Ratio sharing (divide an amount in a given ratio).

3) Algebra & functions

• Simplification and substitution into expressions (evaluate an expression for a given value).

• Linear equations/relationships in words (e.g., “a number is subtracted… then multiplied…”).

• Simple mapping/function-rule interpretation (“linear mapping / rule”).

4) Money, business maths & percentages

• Currency conversion ($ to cedis), discount/marked price, profit percent, commission.

• Simple interest (rate, time, interest earned).

5) Statistics & probability

• Reading/using charts and tables (bar chart interpretation; frequency table for goals; pie chart interpretation).

• Probability of events (beads in a box, ripe fruit selection, coin toss).

• Mean from a frequency table (goals scored).

6) Geometry, mensuration & measurement

• Bearings and back bearing.

• Polygons (interior angles; number of sides given an interior angle).

• Pythagoras/trigonometry in right triangles (finding a side, tangent).

• Mensuration: area of a parallelogram; surface/curved surface area (cube/cylinder); sector area; edges of a cuboid.

• Conversions using a conversion graph (miles ↔ kilometres).

7) Scale, enlargement & vectors

• Scale factor (including linking area scale factor → linear scale factor).

• Vectors on the coordinate plane (vector between two points; magnitude/length).

8) Constructions & instruments

• Identifying constructions (perpendicular bisector, angle constructions) and tools (protractor, compasses).