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This video walks you through some GCSE exam style practice questions on the topic of substitution in maths.

This video explains substitution in maths within the topic of algebra and what it means to evaluate an expression. Practice questions are at the end of the video.

This video explains some of the most common symbols used in mathematics, their names and their meanings.

This video explains how to find the area of a triangle when we are given the lengths of the base and vertical height. We also explain why the formula works. Practice questions and answers are at the end of the video.

This video explains definitions for some common keywords used in statistics. Practice questions and answers are at the end of the video.

This video is an updated introduction lesson to the basic concepts you need to learn for algebra covering the basic conventions as well as the sign rules. Practice questions and answers at the end of the video.

This video explains the different dimensions used in maths in relation to length, width and depth, as well as x, y and z axes. Practice questions are at the end of the video to test your understanding. Skip to: 00:00 Introduction 00:24 What does dimension mean? 01:02 Zero-dimensional objects 01:23 One-dimensional objects 02:03 Two-dimensional objects 02:49 Three-dimensional objects 03:43 Higher dimensions 03:57 Practice questions and answers

This video explains how to draw a line of best fit on a scatter graph. Practice question at the end of the end of the video. For an introduction on scatter graphs/diagrams see our video: https://youtu.be/Vyg9qmBsgAc Skip to: 00:00 Introduction 00:26 How to draw a line of best fit on a scatter graph 00:57 Line of best fit: example one 01:14 Line of best fit: example two 01:26 Practice question and answer

In this video we explain how to find the area of a square or rectangle; what area is and how to calculate it. Practice questions and answers are at the end of the video. Skip to: 00:00 Introduction 00:20 What is area 01:25 Area of a rectangle/square examples 01:49 Formula for area 02:29 Practice questions and answers You may also find the following videos helpful: Finding the factors of a number: https://youtu.be/pEy8QKEBL_M Area of a triangle: https://youtu.be/o7oscIeWrw4 Area of a trapezium: https://youtu.be/8TvXQaBACsI Area of a parallelogram: https://youtu.be/H4Sk6GZju28

In this video we explain two methods to find the highest common factor (greatest common factor) of two or more numbers: by listing the factors or by prime factorisation. Practice questions and answers are at the end of the video. This is an updated, 4K version of our previous video. For a refresher on multiples and factors: https://youtu.be/4EkhaETrcnY For a refresher on prime factors: https://youtu.be/1zagn5okZgM Skip to: 00:00 Introduction 00:23 What is a common factor and highest common factor 00:55 Method one: Listing the factors 01:18 Method two: Prime factorisation 01:50 Example using both methods 02:17 Practice questions and answers

This video explains how to find the prime factors of a number using the factor tree method as well as how to write prime factors in index form. Practice questions and answers are at the end of the video. This is an updated 4K version of our previous video. For a refresher on: Multiples and factors: https://youtu.be/pEy8QKEBL_M Prime numbers: https://youtu.be/CI0sQaQ1tIY Skip to: 00:00 Intro 00:17 What is a prime factor 00:33 Factor tree method 01:37 Expressing the prime factors in index form 02:22 Practice questions and answers

In this video we explain a mental maths trick for performing multiplication. By assessing the whole question first, short-term memory load can be reduced when doing mental arithmetic. Practice questions and answers are at the end of the video. Note this tip only works with certain problems but working this way encourages you to assess the question first and become more flexible when working with numbers. Skip to: 00:00 Introduction 00:18 Multiplication trick example 1 01:31 Multiplication trick example 2 02:17 Multiplication trick practice questions and answers

In this video we explain how to find the multiples and factors of a number. Practice questions and answers are at the end of the video. Note this is an updated, 4K version of our previous video. For our video about how to find the lowest common multiple: https://youtu.be/RLD3GdouKQk Prime factors: https://youtu.be/1zagn5okZgM Skip to: 00:00 Introduction 00:22 What are multiples and how to find the multiples of a number 00:55 What are factors and how to find the factors of a number 02:46 Practice questions and answers

In this video we explain how to solve algebra worded problems. We explain how to form expressions and equations from worded algebra questions. The video starts off with simple examples, building up to the more complex age problems. Practice questions are provided throughout the video. This is an updated, 4K version of the original video. Skip to: 00:00 Introduction 00:19 ‘I think of a number’ example 01:15 Worded algebra example question and solution 01:56 Activity: match the worded algebra question to the expression* 02:17 How to solve an algebra age question 04:48 Algebra worded practice question *note: we say equation in the video…we mean expression :)

This video provides four practice GCSE Maths questions and answers for the higher tier, non calculator paper. We also explain how to get full marks for each question. Skip to: 00:00 Introduction 00:30 GCSE practice question one: decimal multiplication 02:17 GCSE practice question two: percentage increase/decrease 04:58 GCSE practice question three: area 07:14 GCSE practice question four: algebra

This video provides four practice GCSE Maths questions and answers for the foundation tier, non-calculator paper. We also explain how to get full marks for each question. Skip to: 00:00 Introduction 00:28 GCSE Question 1: Ordering decimals 02:28 GCSE Question 2: Factors 04:02 GCSE Question 3: Number machine 06:14 GCSE Question 4: Angle rules

This video provides five missing value shape puzzles, designed to develop problem solving and algebraic skills. This is an updated version of our previous video, with a more detailed explanation of how to solve the puzzles. Check out some of our other videos which may be useful to solve these puzzles: Skip to: 00:00 Introduction to shapes puzzles 00:18 Puzzle 1: Find the value of the hexagon 01:10 Puzzle 2: Find the value of the star 01:31 Puzzle 3: Find the value of the circle 01:58 Puzzle 4: Find the value of the triangle 02:20 Puzzle 5: Find the value of the square

This video explains what compound / composite shapes are and how to find the area of compound shapes. Practice questions and answers are at the end of the video. Skip to: 00:00 Introduction 00:21 What is a compound shape 00:42 Examples of compound shapes 00:48 How to find the area of a compound shape 01:24 Area of compound shapes: example one 02:15 Area of compound shapes: example two 03:27 Area of compound shapes: practice questions and answers

This video explains what order of operations means and what the acronyms BODMAS, BIDMAS and PEDMAS stand for. Practice questions are provided at the end of the video. This is a link to our YouTube video which you can use during your maths lessons. We provide free educational maths help videos to learn mathematics for school, exams revision etc. We add new videos to our channel weekly.

This video explains how to calculate interior and exterior angles of a polygon. It also explains how we find the the sum of interior or exterior angles and how to find the number of sides with just an angle provided. Practice questions are provided at the end of the video. This is a link to our YouTube video which you can use during your maths lessons. We provide free educational maths help videos to learn mathematics for school, exams revision etc. We add new videos to our channel weekly.