# GCE N(T)-Level Maths Help & Practice

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##### 1Numbers and Relations

##### 2Number Theory

##### 3Adding and Subtracting Integers

##### 4Multiplying and Dividing Integers

##### 5Operations with decimals

##### 6Adding and Subtracting Fractions

##### 7Multiplying and Dividing Fractions

##### 8Ratios, Rates, and Proportions

##### 9Percents

##### 10Linear Relations

##### 11Solving Linear Equations

##### 12Linear Functions

- 12.1Distance formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
- 12.2Midpoint formula: $M = ( \frac{x_1+x_2}2 ,\frac{y_1+y_2}2)$
- 12.3Gradient equation: $m = \frac{y_2-y_1}{x_2- x_1}$
- 12.4Gradient intercept form: y = mx + b
- 12.5General form: Ax + By + C = 0
- 12.6Gradient-point form: $y - y_1 = m (x - x_1)$
- 12.7Rate of change
- 12.8Graphing linear functions using table of values
- 12.9Graphing linear functions using x- and y-intercepts
- 12.10Graphing from slope-intercept form y=mx+b
- 12.11Graphing linear functions using a single point and gradient
- 12.12Word problems of graphing linear functions
- 12.13Applications of linear relations

- 12.1Distance formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
##### 13Simultaneous Equations

- 13.1Determining number of solutions to linear equations
- 13.2Solving simultaneous linear equations by graphing
- 13.3Solving simultaneous linear equations by elimination
- 13.4Solving simultaneous linear equations by substitution
- 13.5Money related questions in linear equations
- 13.6Unknown number related questions in linear equations
- 13.7Distance and time related questions in linear equations
- 13.8Rectangular shape related questions in linear equations

- 13.1Determining number of solutions to linear equations
##### 14Quadratic Functions

##### 15Solving Quadratic Equations

##### 16Algebraic Fractions

##### 17Trigonometry

- 17.1Use sine ratio to calculate angles and sides (Sin = $\frac{o}{h}$ )
- 17.2Use cosine ratio to calculate angles and sides (Cos = $\frac{a}{h}$ )
- 17.3Use tangent ratio to calculate angles and sides (Tan = $\frac{o}{a}$ )
- 17.4Combination of SohCahToa questions
- 17.5Solving expressions using 45-45-90 special right triangles
- 17.6Solving expressions using 30-60-90 special right triangles
- 17.7Word problems relating ladder in trigonometry
- 17.8Word problems relating guy wire in trigonometry
- 17.9Other word problems relating angles in trigonometry

- 17.1Use sine ratio to calculate angles and sides (Sin = $\frac{o}{h}$ )
##### 18Geometry and Measurement

##### 19Angles, Lines, and Transversals

##### 20Symmetry

##### 21Scale Factors and Similarity

##### 22Congruent Triangles

##### 23Circles

##### 24Surface Area and Volume

##### 25Data and Graphs

##### 26Representing Data

##### 27Statistics

##### 28Probability