2023 澳洲 AMC B-UpperPrimary 真题 答案 详解

中英双语真题

Upper Primary Division
Questions 1 to 10 are worth 3 marks each.
1-10 题，每题 3 分

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

2. 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

3. 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?
   在一个棋盘游戏中，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

4. In this diagram, how many of the small squares need to be shaded for the large rectangle to be one-quarter shaded?
   如果要让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？

英文真题

Upper Primary Division
Questions 1 to 10 are worth 3 marks each.

1. This shape is made from 7 squares, each 1 cm by 1 cm. What is its perimeter?
   (A) 7 cm (B) 12 cm (C) 14 cm (D) 16 cm (E) 28 cm

2. There are five shapes here. How many are quadrilaterals?
   (A) 1 (B) 2 (C) 3 (D) 4 (E) 5

3. 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?
   (A) 2 (B) 3 (C) 4 (D) 5 (E) 6

4. In this diagram, how many of the small squares need to be shaded for the large rectangle to be one-quarter shaded?
   (A) 2 (B) 3 (C) 4 (D) 6 (E) 12

5. Petra left for school at 8:51 am. She got to school at 9:09 am. How long did it take Petra to get to school?
   (A) 9 minutes (B) 10 minutes (C) 18 minutes (D) 42 minutes (E) 1 hour