Math mysteries pdf

Index of mathematical mysteries and details of the  
mathematics needed to solve each of them: 
Ratio and Proportion 
Fractions and percentages of quantities; equivalence of fractions and 
percentages; multiples of ratios; average of two percentages. 
Directed Numbers 
Addition and subtraction of directed numbers, odd and even numbers 
(integers). 
Algebra 

Addition and subtraction of linear algebraic terms of the form aϰ + b; 
expansion of c(aϰ + b) and factorisation of acϰ + bc. 
Properties of Shape 
Lines of symmetry; centres of rotation; properties of quadrilaterals; 
‘regular’ shapes. 
A set of 15 shape cards are available to provide visual support. 
Locus 
Constructions including right angles, parallel lines, perpendicular 
bisector of a line; loci of points which are equidistant from either a 
fixed point or a fixed line. 
Probability  
Probability line 0-1; knowledge of probability of certainty; vocabulary: 
‘evens chance’; likelihood and chance. 
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