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

难度评级：840

解答：

烤盘面积为 $20\cdot18=360$ 平方英寸，每块面积为 $2\cdot2=4$ 平方英寸。

块数为 $\dfrac{360}{4}=90.$

所以正确答案是 A。

The pan has area $20\cdot18=360$ square inches, and each piece has area $2\cdot2=4$ square inches.

The number of pieces is $\dfrac{360}{4}=90.$

Thus, the correct answer is A.

2018 AMC 12B 第 1 题

答案：A

难度评级：840

解答：

其他年份的第 1 题