... 1,000,000,000 a/one hundred, thousand, million, billion c. 101 1,001 etc. a/one hundred and one, a/one thousand and one d. 201 2,001 etc. two hundred and one, two thousand and one 2. Ordinal Numbers ... dearly in terms of both money and health. Air pollution causes buildings and machines to deteriorate. Our poisioned air damages crops, livestock, roads. And metals and forces huge cleaning bills ... Numbers and the language describing numbers are very important to understand when you read research articles, books or reports or when you discuss with colleagues. The language of numbers and the...