Basic Maths Skills Videos
GCSE Grade A/A* (NC Level 9/10) Topics

Topic 1 - Powers and Indices laws
This video goes through the laws of indices then does several examples of each one with a couple of tricky ones at the end.
Interactive Practice from CIMT :-
  Basic Laws  Negative Indices   Fractional Indices
Worked exam questions:-
  RawMaths
Topic 2 - Manipulate and simplify surds
This video goes through the methods used to simplify and combine surds.
Worked exam questions:-
  RawMaths 
General Tutorials:-
  maths247 
 HEGARTYMATHS - Simplfying  Multiplying  Rationalising 
Topic 3 - Upper and Lower Bounds (Limits)
This video goes through Maximum and Minimum values that a number could have been before rounding. Then goes on to look at the combining of limits (combining is the tricky stuff).
Interactive Practice from CIMT :-
  Error Propagation 
Playlist on this topic:-
  maths247 
Topic 4 - Direct and Inverse Proportion
This video goes through 3 standard proportionality questions, although direct proportion is a Lv 8 (GCSE Grade B) topic Inverse questions are Lv 9(GCSE Grade A) .
Worked exam questions:-
  RawMaths 
General Tutorial:-
  maths247  HEGARTYMATHS 
Topic 5 - Solving Quadratics by Factorising
This video goes through one example of solving a none standard Quadratic equation, you should already be familiar with factorising from Lv8(GCSE Grade B).
Interactive Practice from CIMT :-
  Quadratics - Do questions 3&4 
Worked exam questions:-
  RawMaths-quadratics start at 4:00 
Topic 6 - Solve quadratic equations by using the formula
This video from ExamSolutions gives a nice clear example of how to use the formula to solve a quadratic equation.
Worked exam questions:-
  RawMaths 1  2  3  maths247 
General Tutorial:-
  Hegartymaths - Lots of Pratice  maths247 
Topic 7 - Solving quadratics by completing the square
This video from ExamSolutions goes through a few examples of completing the square whilst explaining what is going on.
Interactive Practice from CIMT :-
  Completing the square questions 
Worked exam questions:-
  Rawmaths-1  2  Maths247 
General Tutorial:-
  maths247 
Topic 8 - Manipulate Algebraic expressions - Simplifying rational expressions
This video by Exam Solutions goes through 4 examples of simplifying algebraic fractions, this is all about factorising the top and the bottom and then canceling them.
Worked exam questions:-
  RawMaths-1  2 
Topic 9 - Algebraic Fractions
This video goes through examples of how to solve equations with alebraic fractions. Check out the Second video for tricker quadratic ones
General Tutorial:-
  Algebraic Fractions Part 2 (Hard ones) 
Worked exam questions:-
  RawMaths - easier  RawMaths - harder  RawMaths 
MyMaths revision :-
  Algebraic Fractions - Lesson 
  Algebraic Fractions - worksheet 
Topic 10 - Simultaneous Equations including one quadratic
This video goes through lots of simultaneous equations worked exam questions but the ones for this topic start at 9:11.