Maths

• ++=+

  — —=+

  +—=—

  —+=—
• HCF


  This is a pair of numbers that make up a number

  e.g what’s the HCF of 8,24

  8=1,8,2,4

  24=1,24,2,12,3,8

  the answer is 8 as they both use that number
• Prime numbers

  2,3,5,7,11,13,17,19
• Area of a cuboid


  length x width x height

  (L x W x H)