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SAT Practice Test 8 Math: Every Question Solved on Video

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Sigma Prep
SAT Math Instructor · 10+ Years Experience
July 18, 2026·Updated September 7, 2026·4 min read

The complete math section of official Practice Test 8, solved in real time with no cuts. Wherever Desmos can replace algebra, you will see the Desmos route, because that is the route worth learning.

Give the Endgame Its Own Review

Look at where your Test 8 misses landed. If they cluster in the back half of Module 2, you do not have a knowledge problem so much as an endgame problem: the hardest questions arrive exactly when you are most tired and most rushed.

Review those questions twice. Once in the video for the method, and once asking an honest question: did I miss this because I could not solve it, or because minute 65 of a math section is a different sport than minute 5? If it is the second, the fix is banking time earlier with faster routes, and building stamina with full-length sittings rather than topic drills alone. We wrote about the hard types that live back there, and the review method itself is in the Test 4 post.

After Test 8

Sigma Prep's mock of Test 8 rebuilds the same test with new problems, three versions, video explanation on every question, so a retake actually measures something. The Test 4 mock is free: full-length timed practice tests. Start free today!

Common Questions

In the video above: all 44 math questions from Bluebook Practice Test 8, solved in real time in order. Bluebook gives you an answer key and short rationales; the video shows the fastest route through each problem, which is often Desmos rather than algebra.

Take the test timed in Bluebook first, score it, and pull out every question you missed or guessed on. Then jump to only those questions in the video and ask one thing for each: could I have recognized this setup, and did I know the move? Do not watch all 80 minutes like a movie.

Not as a measurement, because memory inflates the score. Sigma Prep Test 8 mirrors the official test question for question with fresh problems, in three versions, so you can check whether the skills are really there.

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