Best Answer:
Personally I'd go for impressing her with more than just one subject. Here, the Dept of Education says you should demonstrate what you can do in "at least maths and English".

Okay here's the list I found of what maths skills are expected in school from kids that age IN ENGLAND:

Finding the volume of prisms

Volume of a Cylinder and Sphere

Volume of Pyramids and Cones

Composite Solids

Using fractions 1/2, 1/4, 1/8 to describe part of a whole

Using fractions 1/2, 1/4, 1/8 to describe parts of a group or collection

Comparing and ordering fractions

Mixed numerals

Improper Fractions

Fractions 1/5, 1/10, 1/100

Finding Equivalent Fractions

Multiplying and Dividing Equivalent Fractions

Reducing Fractions to Lowest Equivalent Form

Comparing and ordering fractions greater than 1

Subtracting Fractions from Whole Numbers

Adding and Subtracting fractions with the same denominator

Adding and Subtracting Fractions with Different Denominators

Multiplying Fractions by Whole Numbers

Fractions of Whole numbers

Finding reciprocals of fractions and mixed numbers

Dividing fractions

Dividing mixed numbers

Multiplying Fractions

Multiplying mixed numbers

BODMAS

Intro to Decimals

Comparing and ordering decimals to two decimal places

Decimals with whole numbers 10th and 100th

Adding decimals to two decimal places

Subtracting decimals to two decimal places

Using decimals - shopping problems

Using decimals to record length

Rounding Decimals

Decimals to three decimal places

Adding decimals with a different number of decimal places

Subtracting decimals with a different number of places

Multiplying decimals by 10, 100 and 1000

Multiplying decimals by single-digit numbers

Multiplication of decimals by decimals to two decimal places

Dividing decimals by 10, 100 and 1000

Dividing decimals by whole numbers

Dividing numbers by decimals

Understanding percentages

Changing fractions and decimals to percentages tenths and hundredths

Changing Percentages to Fractions and Decimals

One Quantity as a Percentage of Another

Brain Teasers

Average speed

Using the prefix to determine polygons

Spatial properties of quadrilaterals

Measure and classify angles

Recognise and name triangles

Use grids to enlarge/reduce 2-D shapes

Recognise and name prisms according to spatial properties

Recognise and name pyramids according to spatial properties

Recognise nets for prisms, pyramids, cubes and cones

Viewing 3-D Shapes

Position

Mapping

Main and intermediate compass points

Informal coordinate system

Surface Area of a Cube/Rectangular Prism

Surface Area of a Triangular/Trapezoidal Prism

Surface Area of a Cylinder and Sphere

Surface Area of Pyramids

Surface Area of Composite Solids

Algebraic Expressions

Substitution into Algebraic Expressions

Directed Numbers: Addition and Subtraction

Directed Numbers: Multiplication and Division

Simplifying Algebraic Expressions: Adding Like Terms

Simplifying Algebraic Expressions: Subtracting Like Terms

Simplifying Algebraic Expressions: Combining Addition and Subtraction

Simplifying Algebraic Expressions: Multiplication

Simplifying Algebraic Expressions: Division

Expanding Algebraic Expressions: multiplication

Expanding Algebraic Expressions: Negative multiplier

Expanding and simplifying algebraic expressions

Solving Equations containing Addition and Subtraction

Solving Equations containing Multiplication and Division

Solving Two-Step Equations

Solving Equations Containing Binomial Expressions

Equations involving Grouping Symbols

Equations involving Fractions

Equations Resulting from Substitution into Formulae

Changing the Subject of the Formula

Inequalities

Simplifying Easy Algebraic Fractions

Simplifying Algebraic Fractions Using the Index Laws

Algebraic Fractions resulting in Negative Indices

Factorisation of Algebraic Fractions including Binomials

Cancelling Binomial Factors in Algebraic Fractions

Adding indices when multiplying terms with the same base

Subtracting indices when multiplying terms with the same base

Multiplying indices when raising a power to a power

Multiplying indices when raising to more than one term

Terms raised to the power of zero

Significant Figures

Measuring Angles

Adjacent Angles

Complementary and Supplementary Angles

Vertically Opposite Angles

Angles at a Point

Parallel Lines

Additional questions involving parallel lines

Angle Sum of a Triangle

Exterior angle theorem

Special triangles

Quadrilaterals

Geometric Constructions

More difficult exercises involving parallel lines

Further difficult exercises involving formal reasoning

Angles of regular polygons

Quadratic Polynomials of the form y = ax^2 + bx + c

Graphing perfect squares: y=(a-x) squared

Highest Common Factor

Factors by Grouping

The Gradient

The Gradient Formula

The Straight Line

Lines Through the Origin

General Form of a Line and the x and y Intercepts

Slope Intercept Form of a Line

Point Slope Form of a Line

General Sequences

Finding Tn Given Sn

The Arithmetic Progression

Which Term of an A.P. is this?

Arithmetic Means

The sum to n terms of an A.P.

The Geometric Progression

Source(s):
Self -- 16 yr old auto-didactic natural learner