(6) Select the number/word combination that best estimates each number.
(a) 87,300,000
(i) 8. 73 million
(ii) 8. 73 billion
(iii) 87. 3 million
(iv) 87. 3 billion
(b) 2,670,000,000,000
(i) 2. 7 trillion
(ii) 2. 7 billion
(iii) 2700 million
(iv) 2. 7 million
