types of numbers

• 9x table


  9,18,27,36,45,54,63,72,81,90,99,108
• 6x table


  6,12,15,18,24,36,42,48,54,60,66,72
• Prime numbers less than 50 (Memorize!)

  2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
• Square numbers from 1 to 30. a square number is the answer a number squared eg 4 is a square number because 2² is 4.