Which of the following is closest to?

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问题 Which of the following is closest to?

选项 A、50,000
B、150,000
C、500,000
D、1,500,000
E、5,000,000

答案A

解析 The expressioncan be simplified as follows.

Sinceis between 4 and 5, it follows that 104is between 40,000 and 50,000. Therefore, of the five answer choices listed, 50,000 is closest to. The correct answer is Choice A.
This explanation uses the following strategies.
Strategy 5: Simplify an Arithmetic or Algebraic Representation
Strategy 9: Estimate
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