2023年澳大利亚AMC真题B卷

1. This shape is made from 7 squares, each 1 cm by 1 cm. What is its perimeter? 如图所示，图形由 7 个边长为 1cm 的正方形组成。请问这个图形的总周长是多少？

A) 7cm B) 12cm C) 14cm D) 16cm E) 28cm

1. There are five shapes here. How many are quadrilaterals? 以下五个图形中，请问有多少个是四边形？

A) 1 B) 2 C) 3 D) 4 E) 5

1. In a board game, Nik rolls three standard dice, one at a time. He needs his three rolls to add to 12. His first two dice rolls are 5 and 3. What does he need his third roll to be? 一个棋盘游戏中，小尼投掷三枚标准的骰子，每次掷出一枚。如果他需要三次掷出的点数之和为 12，并且在前两次掷出的骰子的点数分别是 5 和 3，请问小尼第三次需要掷出的点数是多少？

A) 2 B) 3 C) 4 D) 5 E) 6

1. In this diagram, how many of the small squares need to be shaded for the large rectangle to be one-quarter shaded? 如果要使得图中阴影面积占大长方形面积的四分之一，那么一共需要给多少个小正方形涂上阴影？