2015 AMC10A 真题
2015-10-05 AMC 2015 AMC10A AMC PDF 379.47KB
Problem 1
What is the value of
Problem 2
A box contains a collection of triangular and square tiles. There are tiles in the box, containing edges total. How many square tiles are there in the box?
一个盒子装有一堆三角形形状和正方形形状的瓷砖，盒子里总共有 25 块瓷砖，含有 84 条 边。那么盒子里有多少块正方形瓷砖 ?
Problem 3
Ann made a 3-step staircase using 18 toothpicks as shown in the figure. How many toothpicks does she need to add to complete a 5-step staircase?
Ann 用 18 根牙签做了三阶楼梯，如下图所示，她还需要添加多少根牙签就可以做成五阶楼 梯？
2015 AMC 10A
