2011 澳洲 AMC B-UpperPrimary 真题 答案 详解

中英双语真题

Elementary School High Grade (5-6th Grade) Test Paper 1-10 questions, 3 points each
1. Which number equals 152%?
(A) 1520 (B) 152 (C) 15.2 (D) 1.52 (E) 0.152

1. What is the value of the expression (1 + 10 + 10 \times 10 + 10 \times 10 \times 10) ?
   (A) 1010 (B) 10111 (C) 1111 (D) 1110 (E) 11111

2. Xiaowang bought 5 tennis balls for $2.50, with each ball costing the same amount. How much do three tennis balls cost?
   (A) $0.9 (B) $1.50 (C) $1.80 (D) $2.40 (E) $3

3. The time zone of City A is two hours ahead of City M's time zone. When it is 2 am in City M, what time is it in City A?
   (A) 4 am (B) Midnight (C) 6 pm (D) 6 am (E) 8 am

4. How many different rectangles can be found in the diagram below?
   (A) 11 (B) 10 (C) 9 (D) 8 (E) 6

5. The school uniform was sold at a 25% discount from its regular price. Xiaobei spent $6 on a uniform during the sale. How much money did she save?
   (A) $4.50 (B) $2.00 (C) $1.50 (D) $3.00 (E) $4.00

6. Which one of the following diagrams is not an unfolded box without a lid?
   (A) (B) (C) (D) (E)

英文真题

Upper Primary Division Questions 1 to 10, 3 marks each 1. Which of the following numbers has the same value as 152 hundredths? (A) 1520 (B) 152 (C) 15.2 (D) 1.52 (E) 0.152 2. The value of 1 + 10 + 10 × 10 + 10 × 10 × 10 is (A) 1010 (B) 10111 (C) 1111 (D) 1110 (E) 11111 3. Mike buys a can of 5 tennis balls for $2.50. How much would three balls cost? (A) 90c (B) $1.50 (C) $1.80 (D) $2.40 (E) $3 4. Auckland’s time zone is two hours ahead of Melbourne’s. What time is it in Auckland when it is 2 am in Melbourne? (A) 4 am (B) midnight (C) 6 pm (D) 6 am (E) 8 am 5. How many rectangles of any size are in this diagram? (A) 11 (B) 10 (C) 9 (D) 8 (E) 6 6. School shirts are on sale for 25% off the usual price. Bethany buys a shirt on sale for $6.00. How much did she save? (A) $4.50 (B) $2.00 (C) $1.50 (D) $3.00 (E) $4.00