Avoiding traps and the final-week plan

In this lesson you will learn

Spot “wrong quantity”, unit and percent traps in Math
Recognize the types of wrong options in Reading and Writing
Plan the final week and test day

Wrong options on the SAT are not random: they are built from the most likely mistakes a rushing student will make. For example, the student who finds x and celebrates will surely find x among the choices — while the question asks for x + 2. Learn to recognize the traps and you will stop losing points on topics you know.

Math traps

Trap	Example	Defense
Wrong quantity	you found x, the question asks for x + 2	write the target on scratch paper: “? = x + 2”
Units	rate per minute, answer per hour	carry the units through every step
Percent of what?	“25% more than” and “25% less than” use different bases	identify the base: “of what?”
Signs	−3² = −9, (−3)² = 9	put negatives in brackets
“could be” vs “must be”	must be — true in every case	look for one counterexample

Practice 1: two traps in one question

a) If 3x + 6 = 21, what is the value of x + 2? Choices: 5, 7, 9, 15.
b) A book's price (40 manat) is 25% more than a notebook's price. What does the notebook cost? Choices: 30, 32, 35, 50.

Show solution

a) 3x = 15 ⇒ x = 5 — that is the trap. The question asks for x + 2: 7. Faster: 3x + 6 = 3(x + 2) = 21 ⇒ x + 2 = 7.
b) The base is the notebook's price: 1.25 · n = 40 ⇒ n = 32 manat. 30 manat (taking 25% off 40) is the trap: check, 30 · 1.25 = 37.5 ≠ 40.

Reading and Writing traps

True but not the answer — a fact from the text that does not do what the question asks.
Extreme word — always, never, all, proves, while the text is cautious.
The other meaning of a word — sound as “noise” when the context means “reliable”.
The long, “formal” option — in grammar questions a longer sentence is not more correct; often the shortest correct option wins.

The final-week plan

1
Day 7
Your last full Bluebook practice test — at the real test time if possible.
2
Day 6
Analyze it in My Practice and update your error log.
3
Day 5
Redo the questions in your error log; review grammar rules and the formulas that are not on the reference sheet.
4
Day 4
One timed Reading and Writing module and one timed Math module (from the Student Question Bank).
5
Day 3
Light review: transition and vocabulary flashcards, Desmos routines.
6
Day 2
Logistics: Bluebook updated, exam setup complete, admission ticket printed, ID and charger ready, route to the test center checked.
7
Day 1
No new material. 20–30 minutes of light review, pack your bag, go to bed early.
8
Test day
Eat breakfast, leave early according to the time on your admission ticket; in the break drink water and have a light snack.

Key points

Wrong options are built from likely mistakes: wrong quantity, units, percent base, signs.
Before choosing, recheck what the question actually asks for.
In Reading and Writing rely only on the text; be wary of extreme words.
Final week: one full test, analysis, error review, logistics, good sleep.

Check yourself

10 questions. Every correct answer earns XP.

1 / 10

If 4x − 8 = 20, what is the value of x − 2?