Question

Kate 烤了一盘 $20$ 英寸乘 $18$ 英寸的玉米面包。玉米面包被切成 $2$ 英寸乘 $2$ 英寸的小块。这一盘共有多少块玉米面包？

Kate bakes a $20$ -inch by $18$ -inch pan of cornbread. The cornbread is cut into pieces that measure $2$ inches by $2$ inches. How many pieces of cornbread does the pan contain?

$90$

$100$

$180$

$200$

$360$

答案：A

知识点：面积矩形

难度评级：860

解答：

整盘面积为 $20 \times 18 = 360$ 平方英寸。每小块面积为 $2 \times 2 = 4$ 平方英寸。因此小块数为 $360 / 4 = 90$ 。正确答案是 A。

The whole pan has area $20 \times 18 = 360$ square inches. Each piece is $2 \times 2 = 4$ square inches. So the number of pieces is $360 / 4 = 90.$ Thus, A is the correct answer.

2018 AMC 10B 第 1 题

答案：A

难度评级：860

解答：

其他年份的第 1 题