# Year 9 Maths Help & Practice

Boost your maths marks with our complete Year 9 maths help. Whether it's Key Stage 3 Maths (National Curriculum), or National curriculum in Wales (Key stage 3), we've got you all covered!

Just like your class or textbook, our comprehensive help includes topics such as Surface area and volume, Adding Fraction, Percentages, Pythagorean Theorem, Statistics, Probability, and more. StudyPug gives you not just lessons, but tutorials that teach you how to tackle even the hardest KS3 maths questions with step-by-step solutions – in videos. Then, strengthen your understanding with tons of year 9 maths practice.

All our lessons are taught by experienced Year 9 Maths teachers. Let's finish your homework in no time, and ACE that test.

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##### 1Number Theory

##### 2Number Systems

##### 3Adding and Subtracting Integers

##### 4Multiplying and Dividing Integers

##### 5Rational Numbers

##### 6Operations with Decimals

##### 7Adding and Subtracting Fractions

##### 8Multiplying and Dividing Fractions

##### 9Powers and Exponents

##### 10Surds

##### 11Ratios, Rates, and Proportions

##### 12Proportional Relationships

##### 13Percents

##### 14Measuring Systems

##### 15Coordinates, Quadrants, and Transformations

##### 16Angles, Lines, and Transversals

##### 17Scale Factors and Similarity

##### 18Pythagorean Theorem

##### 19Introduction to 3-dimensional figures

##### 20Circles

##### 21Patterns and Solving Equations

##### 22Introduction to Polynomials

##### 23Solving Linear Equations

- 23.1Model and solve one-step linear equations:
*ax = b*,*x/a = b* - 23.2Solving two-step linear equations using addition and subtraction:
*ax + b = c* - 23.3Solving two-step linear equations using multiplication and division:
*x/a + b = c* - 23.4Solving two-step linear equations using distributive property:
*a(x + b) = c*

- 23.1Model and solve one-step linear equations:
##### 24Solving Linear Equations (Advanced)

##### 25Linear Inequalities

##### 26Linear Functions

- 26.1Distance formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
- 26.2Midpoint formula: $M = ( \frac{x_1+x_2}2 ,\frac{y_1+y_2}2)$
- 26.3Gradient equation: $m = \frac{y_2-y_1}{x_2- x_1}$
- 26.4Gradient intercept form: y = mx + b
- 26.5General form: Ax + By + C = 0
- 26.6Gradient-point form: $y - y_1 = m (x - x_1)$
- 26.7Rate of change
- 26.8Graphing linear functions using table of values
- 26.9Graphing linear functions using x- and y-intercepts
- 26.10Graphing from gradient-intercept form y=mx+b
- 26.11Graphing linear functions using a single point and gradient
- 26.12Word problems of graphing linear functions
- 26.13Parallel and perpendicular lines in linear functions
- 26.14Applications of linear relations

- 26.1Distance formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
##### 27Multiplication and Division of Polynomials

##### 28Data and Graphs

##### 29Statistics

##### 30Probability