2010 澳洲 AMC C-Junior 真题 答案 详解

中英双语真题

Primary Exam Paper (Grades 7-8)

1-10 questions, 3 points each

1. Expression: (27 + 48 - 37) equals
   (A) 32 (B) 38 (C) 48 (D) 52 (E) 68

2. Expression: (2^2 + 3^3) equals
   (A) 31 (B) 10 (C) 11 (D) 25 (E) 17

3. In the diagram, find the value of (x):
   (A) 15 (B) 40 (C) 55 (D) 75 (E) 80

4. A class that lasts for 55 minutes ends at 10:05 AM. What time does it start?
   (A) 9:15 AM (B) 9:20 AM (C) 9:10 AM (D) 9:50 AM (E) 10:50 AM

5. Expression: (2010 - 20.10) equals
   (A) 1990.09 (B) 1990.9 (C) 1989.09 (D) 1989.9 (E) 1998.9

6. Expression: (4 + \frac{1}{6} - \frac{2}{3}) equals
   (A) (3\frac{5}{6}) (B) (3\frac{2}{3}) (C) (4\frac{1}{3}) (D) (3\frac{8}{9}) (E) (3\frac{1}{2})

7. The gray tiles occupy (\frac{1}{5}) of the large rectangle. How many white tiles need to be removed so that the remaining gray tiles occupy (\frac{1}{3})?
   (A) 2 (B) 3 (C) 4 (D) 6 (E) 7

英文真题

Junior Division
Questions 1 to 10, 3 marks each

1. The value of (27 + 48 - 37) is
   (A) 32
   (B) 38
   (C) 48
   (D) 52
   (E) 68

2. The value of (2^2 + 3^3) is
   (A) 31
   (B) 10
   (C) 11
   (D) 25
   (E) 17

3. In the diagram, the value of (x) is
   (A) 15
   (B) 40
   (C) 55
   (D) 75
   (E) 80

4. A 55-minute school assembly ends at 10:05 am. At what time did it start?
   (A) 9:15 am
   (B) 9:20 am
   (C) 9:10 am
   (D) 9:50 am
   (E) 10:50 am

5. The value of (2010 - 20.10) is
   (A) 1990.09
   (B) 1990.9
   (C) 1989.09
   (D) 1989.9
   (E) 1998.9

6. Which of the following is equal to (4 + \frac{1}{6} - \frac{2}{3})?
   (A) (3\frac{5}{6})
   (B) (3\frac{2}{3})
   (C) (4\frac{1}{3})
   (D) (3\frac{8}{9})
   (E) (3\frac{1}{2})