2007 袋鼠数学 B-Ecolier 真题 答案 详解

2007 年 B-Ecolier 真题,中英双语,答案,详解

英文真题

INTERNATIONAL KANGAROO MATHEMATICS CONTEST 2007 Level Ecolier: Class (3 & 4) Max Time: 1 Hour & 15 Minutes Each solved problem gives you 3 points Q1. Amina walks from the left to the right and puts the numbers in her basket. Which of the following numbers can be in her basket? A) 1, 2 and 4 B) 2, 3 and 5 Q2. In what figure do you find the biggest number of little squares? A) B) Q3. How many common letters do the words KANGAROO and PROBLEM have? A) 1 B) 2 Q4. What is the first number greater than 2007 such that the sum of the digits is the same? A) 2016 B) 2115 Q5. There are 5 lampposts on one side of the path in the park. The distance between each pair of neighbouring lampposts is 3 metres. Kangaroo was jumping all the way from the first lamppost to the last one. How many metres has he jumped? A) 12 B) 9 Q6. The combination for opening a safe is a three digit number made up of different digits. How many different combinations can you make using only digits 1, 3 and 5? A) 6 B) 4