1990 AMC 8 第 6 题
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6.
这五个数中哪一个最大？
Which of these five numbers is the largest?
答案：D
小提示：
除以 等于乘以 。
Dividing by is the same as multiplying by
大提示：
其他选项都仍在 附近，但有一个会变成原来的几千倍
All the other choices stay near , but one of them becomes thousands of times larger
解答：
选项 A、B 和 E 都非常接近 。选项 C 把 乘以一个很小的数，会变得更小。
选项 D 是除以 ，也就是乘以 。它比 大几千倍，所以最大。
所以正确答案是 D。
Choices A, B, and E are all very close to , and choice C multiplies by a tiny number, making it much smaller.
Choice D divides by , which is the same as multiplying by . This makes it thousands of times larger than , so it is the largest.
Thus, the correct answer is D .
其他年份的第 6 题
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