maths

• what is truncation

  to miss out digits passed a certain point
• how do we work out the lower bound of a number 


  take 1 from the last digit and add 5 on the end
• how do we work out the upper bound of a number


  add 5 at the end
• what is ment by the term HCF


  Highest Common Factor
• what is ment by the term LCM


  Lowest Common Factor
• what are the first 5 prime numbers

  2,3,5,7,11
• what is ment by prime factorisation 


  To express a number as a product of its prime factors