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Problem 2
AMC 8 1987 Problem 2
AMC8 1987 年第 2 题
百分比
★☆☆☆☆
Problem
2/25=
A.
0.008
B.
0.08
C.
0.8
D.
1.25
E.
12.5
正确答案 · Correct Answer
B
解析 · Solution
Solution 1
2
25
=
2
⋅
4
25
⋅
4
=
8
100
=
.08
\displaystyle \frac{2}{25}=\frac{2\cdot 4}{25\cdot 4} = \frac{8}{100} =.08
25
2
=
25
⋅
4
2
⋅
4
=
100
8
=
.08
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