2005 AMC8 真题 答案 详解
| 序号 | 文件 | 说明 | ||
|---|---|---|---|---|
| 1 | 2005-amc8-paper-eng-zh.pdf | 10 页 | 435.34KB | 真题-中英双语 |
| 2 | 2005-amc8-paper-eng.pdf | 5 页 | 205.27KB | 真题-英文 |
| 3 | 2005-amc8-key.pdf | 1 页 | 56.33KB | 真题-答案 |
| 4 | 2005-amc8-solution-eng.pdf | 26 页 | 496.23KB | 真题-文字详解-英文 |
| 5 | 2005-amc8-solution-video-zh.mp4 | 18.4 分钟 | 49.13MB | 真题-视频详解-普通话 |
2005 AMC8
Problem 1
Connie multiplies a number by 2 and gets 60 as her answer. However, she should have divided the number by 2 to get the correct answer. What is the correct answer?
Connie 把一个数字乘以 ，得到答案为 2 60 。然而，她本应该把数字除以 2 才能得到正确的答 案。那么正确答案是什么？
(A) 7.5 (B) 15 (C) 30 (D) 120 (E) 240
Problem 2
Karl bought five folders from Pay-A-Lot at a cost of each. Pay-A-Lot had a -off sale the following day. How much could Karl have saved on the purchase by waiting a day?
Karl 从 Pay-A-Lot 买了五个文件夹，每个价格为 2.5 美元。 Pay-A-Lot 第二天降价 20 ％。那 么 Karl 如果等一天他本可以省下多少钱？
(A) $1.00 (B) $2.00 (C) $2.50 (D) $2.75 (E) $5.00
Problem 3
What is the minimum number of small squares that must be colored black so that a line of symmetry lies on the diagonal of square ?
要使得正方形 ABCD 的一条对称轴位于对角线 上，则至少需要将多少个小正方形涂成黑色？
