2011 澳洲 AMC C-Junior 真题 答案 详解

2011 年 C-Junior 真题,中英双语,答案,详解

中英双语真题

Primary Exam Paper (Grades 7-8)

1-10 questions, 3 points each

1. Calculate (2011 - 1102): (A) 1111 (B) 1191 (C) 1001 (D) 989 (E) 909

2. In the right triangle, find the value of (x): (A) 75 (B) 80 (C) 85 (D) 90 (E) 95

3. I went for a walk at 2:15 PM and returned home at 3:20 PM. How long did I spend walking? (A) 50 minutes (B) 55 minutes (C) 60 minutes (D) 65 minutes (E) 70 minutes

4. On the number line, what is the coordinate of the point that is 15 units to the left of point Q? (A) -10 (B) -9 (C) 0 (D) 5 (E) 10

5. Simplify (888 - (88 - 8)): (A) 808 (B) 880 (C) 800 (D) 792 (E) 2011

6. Given (5 \times 7 \times 11 = 385), calculate (0.5 \times 0.7 \times 0.11): (A) 38.5 (B) 3.85 (C) 0.385 (D) 0.0385 (E) 0.00385

7. Lines PT, QU, RV, and SW all intersect at point O. Given (\angle QOR = 20^\circ), (\angle SOT = 50^\circ), and (\angle VOW = 70^\circ). Find the measure of (\angle POQ): (A) 30° (B) 40° (C) 50° (D) 60° (E) 80°

英文真题

Junior Division
Questions 1 to 10, 3 marks each

1. The value of (2011 - 1102) is
   (A) 1111
   (B) 1191
   (C) 1001
   (D) 989
   (E) 909

2. In the diagram, the value of (x) is
   (A) 75
   (B) 80
   (C) 85
   (D) 90
   (E) 95

3. I left for a walk at 2:15 pm and returned at 3:20 pm. How long was I out walking?
   (A) 50 minutes
   (B) 55 minutes
   (C) 60 minutes
   (D) 65 minutes
   (E) 70 minutes

4. On this number line,
   the point 15 units to the left of (Q) is
   (A) -10
   (B) -9
   (C) 0
   (D) 5
   (E) 10

5. The value of (888 - (88 - 8)) is
   (A) 808
   (B) 880
   (C) 800
   (D) 792
   (E) 2011

6. We know that (5 \times 7 \times 11 = 385). What is the value of (0.5 \times 0.7 \times 0.11)? (A) 38.5
   (B) 3.85
   (C) 0.385
   (D) 0.0385
   (E) 0.00385