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Answer Explanations for: SAT January 2011

This document contains detailed answer explanations to every question from the SAT January 22, 2011, Form Codes AEHA, BWHA. Many Mathematics and Writing explanations also link to content pages that explain the relevant grammatical and mathematical concepts in greater detail. Please note that this document contains the explanations only, and does not provide the test questions themselves; it is a tool intended for use with a copy of your test that you purchased from the College Board via the Question and Answer Service (QAS). The following are sample explanations:

Section 2: Mathematics
1) C) The tenths place is the first digit to the right of the decimal. Therefore, when rounded to the nearest tenth, the number in the question is equal to -1.6, since .57 is closer to .6 than to .5. Point C is the closest point to -1.6, as it appears to be right around -1.55 or -1.6. Point D does not work because it is closer to -1.3 or -1.4. If you answered B, you may have rounded the number to the nearest integer, -2, rather than to the nearest tenth. See inequalities and the number line.