Maths: Key Revision Notes

Basic Skills

• Negative Numbers 
  • same signs = +ve
  • different signs = -ve
• Add and Subtract Fractions
  • Common denomenator
• Multiply and Divide Fractions
  • Multiplying: x tops, x bottoms
  • Dividing: flip 2nd fraction then x
• Basic %
  • Fraction x100
• Fraction/ Decimal/ %
  • x or / by 100

Number

• Prime Factorisation
  • factor tree
• Finding…