SAT Math Strategy Guide
The SAT math section is as much a tactics test as a math test. Here are the four strategies that separate 600-scorers from 750-scorers.
10 min read · Educational guide
Strategy 1: Backsolving (test the answer choices)
If a multiple-choice question asks for a number and the answers are listed in order, start with answer choice B or C and plug it back into the original equation or condition. If it works, you're done. If it's too big, try a smaller one. If too small, try a bigger one. This often beats setting up algebra.
Example. If 3(x − 4) + 2x = 28, what is x?
A) 6 B) 7 C) 8 D) 9
Backsolve with C = 8: 3(8 − 4) + 2(8) = 12 + 16 = 28. ✓
Answer: C. No algebra needed.
Strategy 2: Plug-in (make up your own numbers)
When a question uses variables in both the question and answer choices, pick a simple number (avoid 0, 1, and numbers that appear in the problem), plug it in, and check which answer matches.
Example. If a = 3b + 2, what is the value of 2a − 6b?
A) 2 B) 4 C) 6 D) 8
Let b = 1. Then a = 5. So 2a − 6b = 10 − 6 = 4.
Answer: B.
Strategy 3: Use Desmos like a pro
The digital SAT has a built-in Desmos calculator. Use it for:
- Graphing systems. Type both equations; the intersection is the solution.
- Finding zeros. Graph the function; click any x-intercept.
- Tables. Use the table feature to test integer inputs quickly.
- Quadratics. Don't factor — graph it, read off the roots.
Don't use Desmos for arithmetic — it's faster in your head. Use it for equations and graphing.
Strategy 4: Pacing — the 90-second rule
You have ~1 min 35 sec per math question. If a question still feels confusing after 90 seconds, flag it, mark a guess, and move on. Come back after you've banked the easy points. Every minute you sink into one hard question is a minute stolen from two easy ones.
The order of operations on math (literal)
- Read the last sentence first ("What is the value of x?"). Know what's being asked.
- Scan the answers — if they're numbers, consider backsolving.
- Try the cleanest method (often: plug-in or Desmos before algebra).
- Plug your answer back into the original constraint to verify.
What separates 700+ scorers
- They almost never set up algebra when a plug-in or Desmos shortcut works.
- They skip the hardest question of each module on the first pass.
- They always re-read the question stem before bubbling — most missed problems are misread, not miscalculated.
Drill: grab 20 official math questions. For every single one, ask "could I have solved this faster by plugging in or backsolving?" The pattern recognition transfers immediately.
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