ACCUPLACER study materials
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ACCUPLACER common mistakes

ACCUPLACER · Understand the traps and how to avoid them.

Mistake 1

Selects the answer choice that matches personal experience or general knowledge about the topic instead of locating the sentence in the passage that proves it.

Familiar topics (jobs, school, health, technology) trigger real-world assumptions, and the choice that agrees with those assumptions looks obviously correct, so the passage is never re-read.

What to do instead

Before marking an answer, physically point to the line that supports it. Any choice that is true in real life but cannot be matched to text is eliminated.

Mistake 2

Chooses a supporting detail, or a choice containing absolute words such as always, never, all, or only, when the question asks for the main idea or for an inference.

A detail can be found verbatim in the passage, so it feels verifiably safe, and absolute wording feels confident and decisive to a test-taker under time pressure.

What to do instead

For main idea, verify the choice covers every paragraph, not one line. For inference, match the passage's degree of certainty: qualified text ('often', 'may', 'some') cannot support an absolute conclusion.

Mistake 3

Joins two complete sentences with only a comma, or with no punctuation at all, because the result 'sounds fine' where the reader would pause.

Spoken English places a pause at that point, so the ear accepts it; writers also confuse sentence length with sentence sophistication and avoid the period.

What to do instead

Count the subject-verb pairs in the sentence. If there are two complete pairs and no coordinating conjunction or semicolon, repair with a period, a semicolon, or a conjunction such as 'and', 'but', or 'so'.

Mistake 4

Edits only the underlined portion of a single sentence, so the correction shifts the verb tense, breaks a pronoun's link to its antecedent, or contradicts the logic of the surrounding sentences.

Each item displays one isolated sentence, which frames the task as local editing rather than passage-level revision.

What to do instead

Read the full sentence before and after the target, then re-read the corrected version in context, confirming three things: tense consistency, clear pronoun antecedent, and a logical connector that still fits.

Mistake 5

Drops or misapplies negative signs and distributes over only the first term, writing -(x - 4) as -x - 4, or evaluating -3 squared as 9.

Under time pressure the minus sign is processed as an operator between two numbers rather than as part of a single number, so the eye skips over it during copying.

What to do instead

Rewrite the expression on scratch paper with parentheses around every negative term before doing any operation, and perform exponentiation before multiplication explicitly, one line at a time.

Mistake 6

Translates a verbal comparison in the order the words are read, writing '5 less than x' as 5 - x, or 'x is 5 less than y' as x - 5 = y.

The phrase is built left to right as it is spoken, but the mathematical structure starts with the quantity that follows 'than'.

What to do instead

Re-read the phrase beginning at the word after 'than'. Test the translation with a substitute number (let x = 10; '5 less than x' must equal 5, not negative 5) before solving.

Mistake 7

Stops at the intermediate value: solves for x when the question asks for 2x + 3, reports the side length when asked for the perimeter, or reports the discount when asked for the final price.

The equation-solving feels like the substantive work, and the short back-substitution step is easy to skip when the answer appears on screen.

What to do instead

Before computing, write the requested quantity at the top of the scratch work. Circle it in the question stem and only box a final answer after substituting back into that expression.

Mistake 8

Fills a blank with the choice that fits the meaning but is the wrong part of speech or form, producing 'He is very success', 'a quickly runner', or 'interested in study' instead of 'studying'.

Meaning-level processing happens first and fast; the grammatical requirements of the slot (adjective after 'very', gerund after a preposition) are only noticed if the sentence is actually parsed.

What to do instead

Label the slot before looking at the choices: does it need a noun, verb, adjective, or adverb? Then check the required form, such as gerund versus infinitive or comparative versus base form.

Mistake 9

Writes full sentences while the recording plays, so the next question is missed and the speaker's self-correction ('...actually, not Tuesday, Wednesday') is recorded backwards.

Notes are taken as dictation rather than as cues, and the time needed to write a sentence exceeds the gap between items.

What to do instead

Write only keywords, names, and numbers, never full sentences. Keep the eyes on the next question while writing, and treat any self-correction as the final answer.

Mistake 10

Writes about the general topic ('technology is important') instead of answering the specific task ('Should schools ban phones during class?'), so the essay never states a position supported by reasons.

The prompt is skimmed for its topic noun and the task words ('take a position', 'give examples') are ignored; anxiety about the timer pushes the writer to start typing immediately.

What to do instead

Underline the task words and rewrite the prompt as a direct question. Answer that question in one sentence in the introduction, and begin each body paragraph with a reason that supports the answer plus one concrete example.