(Chapter  1)               KNOWING OUR NUMBERS.

INTRODUCTION:

  • Ascending order — Ascending  order means arrangement from the smallest to the greatest
  • Descending order — Descending order means arrangement from the greatest to the smallest.
  • Estimation– A rough calculations that do not give the exact value but gives an idea of the quantity.
  • 1 million = 10 lakh
  • 1 crore = 10 million
  • 1 billion = 1000 million
  • 10 millimetres = 1 centimetre
  • 100 centimetres = 1 metre
  • 1000 metres = 1 kilometre
  • 1000 milligrams = 1 gram
  • 1000 grams = 1 kilogram
  • 1000 millilitres = 1 litre