Question

这五个数中哪一个最大？

Which of these five numbers is the largest?

$13579 + \dfrac{1}{2468}$

$13579 - \dfrac{1}{2468}$

$13579 \times \dfrac{1}{2468}$

$13579 \div \dfrac{1}{2468}$

$13579.2468$

答案：D

知识点：分数

难度评级：730

解答：

选项 A、B 和 E 都非常接近 $13579$ 。选项 C 把 $13579$ 乘以一个很小的数，会变得更小。

选项 D 是除以 $\dfrac{1}{2468}$ ，也就是乘以 $2468$ 。它比 $13579$ 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 $13579$ , and choice C multiplies $13579$ by a tiny number, making it much smaller.

Choice D divides by $\dfrac{1}{2468}$ , which is the same as multiplying by $2468$ . This makes it thousands of times larger than $13579$ , so it is the largest.

Thus, the correct answer is D .

1990 AMC 8 第 6 题

答案：D

难度评级：730

解答：

其他年份的第 6 题