2003 澳洲 AMC C-Junior 真题 答案 详解

2003 年 C-Junior 真题,中英双语,答案,详解

英文真题

2003 Junior
JUNIOR DIVISION
Questions 1 - 10, 3 marks each

1. $3004-2003$ equals
   (A) 999 (B) 991 (C) 1001 (D) 2001 (E) 2003

2. Which of the following is closest to 9?
   (A) 9.2 (B) 8.17 (C) 8.7 (D) 9.21 (E) 8.71

3. The size of $\angle RSQ$, in degrees, is
   (A) 120 (B) 130 (C) 140 (D) 150 (E) 160

4. The temperature at Cooma rose from $7^{\circ} \mathrm{C}$ yesterday morning to $15^{\circ} \mathrm{C}$ yesterday afternoon. The number of degrees the temperature rose was
   (A) 5 (B) 7 (C) 8 (D) 10 (E) 12

5. Which of the following is equal to 50?
   (A) $15+(10 \times 2)$ (B) $100 \div 5$ (C) $2 \times(5 \times 10)$ (D) $(20+80) \div 10$ (E) $200 \div 4$

6. In the diagram, the size of $\angle PQT$, in degrees, is
   (A) 74 (B) 107 (C) 111 (D) 101 (E) 121

7. $\frac{2003}{20.03}$ equals
   (A) 0.01 (B) 100 (C) 0.1 (D) 1 (E) 10