(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