Basic Maths Skills Videos
GCSE Grade C (NC Level 7) Topics

Topic 1 - Understand and use Proportionality
This video goes through the ideas of proportionality to do with conversion rates, ratio and Percentages.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Percentage Multipliers - Lesson  Percentage Multipliers - worksheet 
Topic 2 - Calculate using Proportional Change
This video goes through the ideas of calculating proportional changes to do with percentages.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Proportion - Lesson  Proportion - worksheet 
Topic 3a - Multiply and Divide by numbers 0 - 1
This video goes through the ideas of Multiplying and Dividing numbers between 0 and 1.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Multiplying Decimals - Lesson  Multiplying Decimals - worksheet 
Topic 3b - Four rules of Fractions
This video goes through some examples of adding, subtracting, multiplying and dividing fractions.
Worked exam questions:-
  RawMaths-1  2 
MyMaths revision :-
  Multiplying Fractions - Lesson  Multiplying Fractions - worksheet  Dividing Fractions - Lesson  Dividing Fractions - worksheet 
Topic 4 - Rounding and estimating to one significant figure
This video goes through some examples rounding and estimating and then has some practice questions for you to attempt.
Worked exam questions:-
  RawMaths-1 
MyMaths revision :-
  Significant Figures - Lesson  Significant Figures - worksheet 
Topic 5 - Using a calculator efficiently
This video goes through some examples of using a calculator and then asks you to have a go at some practice questions.
Worked exam questions:-
  RawMaths-1  2 
MyMaths revision :-
  Using a Calculator - Worksheet 
Topic 6 - Expanding two brackets
This video goes through some examples of expanding two brackets and then asks you to have a go at some practice questions.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Double brackets - Lesson  Double brackets - worksheet 
Topic 7 - Solving simultaneous equations by elimination
Although not strictly a Grade C / Level 7 topic this video goes through some basic examples of solving simultaneous equations by eliminatation.
Worked exam questions:-
  RawMaths-1  2 
MyMaths revision :-
  Simultaneous Equations 1 - Lesson  Simultaneous Equations 1 - worksheet 
Topic 8 - Drawing and Solving Inequalities
This video goes through some examples of drawing inequalities on a number line and solving inequalities with only one variable (that means one unknown value).
Worked exam questions:-
  RawMaths-lots of questions 
MyMaths revision :-
  Inequalities - Lesson  Inequalities - worksheet 
Topic 9 - Using Formula and changing the subject
This video goes through some of the basic skills for using formlae and changing the subject of some examples.
Worked exam questions:-
  RawMaths-lots of questions 
MyMaths revision :-
  Changing the subject - Lesson  Changing the subject - worksheet 
Topic 10 - Nth term of a Quadratic Sequence
This video goes through how to use an nth term formula to generate terms in a sequence and then how to find an nth term formula for a basic Quadratic sequence. There is also a link to a much more detailed video on finding the nth term for any quadratic sequence.
Worked exam questions:-
  RawMaths-1  2  3  4 
MyMaths revision :-
  Quadratic Sequences - Lesson  Quadratic Sequences - worksheet 
Topic 11 - Plotting Quadratic and Cubic Functions
This video goes through how to plot one quadratic and one cubic graph.
Worked exam questions:-
  RawMaths-1 
MyMaths revision :-
  Quadratic Graphs (Section 5) - Lesson  Quadratic Graphs (Q2) - worksheet 
Topic 12 - Pythagoras Theorem
This video goes through the basics of using Pythagoras Theorem to solve questions in right angled triangles.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Pythagoras Theorem - Lesson  Pythagoras Theorem - worksheet 
Topic 13 - Volume of Prisms
This video goes through how to calculate the area of 2-D shapes and therefore the volume of a prism.
Worked exam questions:-
  RawMaths-1  2  3 
MyMaths revision :-
  Volume of Prisms - Lesson  Volume of Prisms - worksheet 
Topic 14 - Enlarge with Fractional Scale factors
This video goes through how to enlargements with a centre and fractional scale factors.
Topic 15 - Locus of points
This video goes through how to draw the basic loci or points that satisfy rules such as being equidistant from a point, two points and two lines.
Topic 16 - Errors in Calculations
This video goes through how to work out the maximum and minimum values when a number is rounded be it Descrete or Continuous data.
Topic 17 - Compound Measures - Speed & Density
This video goes through some examples of how to calculate Speed, Distance and Time or Density, Mass and Volume.
Topic 18 - Planning a Statistical Survey
This video talks through an example of the things to keep in mind for a statistical survey, then does a practice exam question.
Topic 19 - Statistical Diagrams
This video goes through an example of a typical scatter graph / correlation question and one on how to draw a frequency polygon.
Topic 20 - Mean from a Grouped Frequency Table
This video recaps how to calculate the mean from a frequency table then does an example of the mean from grouped frequency table. Then to finish off it goes through an exam question.
Topic 21 - Compare Distributions
This video describes how to compare to sets of summary data.
Topic 22 - Relative Frequency
This video goes through two examples of questions that might be asked about relative frequency which is the probablility from an experiment.