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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMaths1 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: RawMathslots 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: RawMathslots 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: RawMaths1 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: RawMaths1 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: RawMaths1 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 2D shapes and therefore the volume of a prism.
Worked exam questions: RawMaths1 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.
