AMC 8 2017 Problem 4
AMC8 2017 年第 4 题
表达式与运算★☆☆☆☆
When 0.000315 is multiplied by 7,928,564 the product is closest to which of the following?
当 0.000315 乘以 7,928,564，乘积最接近下面哪个数？
- A.210
- B.240
- C.2100
- D.2400
- E.24000
正确答案 · Correct Answer
D
解析 · Solution
Solution 1
We can approximate 7,928,564 to 8,000,000 and 0.000315 to 0.0003. Multiplying the two yields 2400. Thus, it shows our answer is 2400. by Tarmac-boy
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