1. Algebraic simplification; angle classification (acute, obtuse, reflex, right); mean of decimal set; correlation types in scatter graphs 2. Two-way tables; rounding to decimal places; ratio division; highest common factor; decimal-fraction-percentage comparison 3. Probability with coloured objects; scale factor in enlargement; algebraic substitution with negative values; reverse percentage increase; converting recurring decimals to fractions; solving linear inequalities 4. Line graph drawing; parallelogram coordinates; midpoint formula; order of operations; prime factorisation; nth-term of arithmetic sequences 5. Conditional probability in two-way tables; scatter graph interpretation; line of best fit and prediction; algebraic expansion; subject rearrangement; solving fractional equations; exponent rules