2009 AMC 12B 第 3 题
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所有题目均经美国数学协会（MAA）官方合法授权使用。
3.
比 少百分之二十的数，比哪个数多三分之一？
Twenty percent less than is one-third more than what number?
其他年份的第 3 题
- 1950 AMC 12
- 1951 AMC 12
- 1952 AMC 12
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- 1954 AMC 12
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- 1964 AMC 12
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- 1968 AMC 12
- 1969 AMC 12
- 1970 AMC 12
- 1971 AMC 12
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- 1996 AMC 12
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- 2003 AMC 12A
- 2003 AMC 12B
- 2004 AMC 12A
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- 2006 AMC 12A
- 2006 AMC 12B
- 2007 AMC 12A
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- 2008 AMC 12A
- 2008 AMC 12B
- 2009 AMC 12A
- 2010 AMC 12A
- 2010 AMC 12B
- 2011 AMC 12A
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- 2012 AMC 12A
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- 2014 AMC 12A
- 2014 AMC 12B
- 2015 AMC 12A
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- 2016 AMC 12A
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- 2017 AMC 12B
- 2018 AMC 12A
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- 2019 AMC 12A
- 2019 AMC 12B
- 2020 AMC 12A
- 2020 AMC 12B
- 2021 AMC 12A Spring
- 2021 AMC 12B Spring
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- 2021 AMC 12B Fall
- 2022 AMC 12A
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- 2025 AMC 12B