Free
$0no card needed
- The Daily, every day
- 36 practice questions a day, each with an explanation: 12 easy, 12 medium, 12 hard
- Full-length Test A and Challenge Test 1
- All 1,023 vocabulary words: browse, flashcards and quiz
Digital SAT practice
Reach your peak.
A quick run every day, an explanation for every question, and full-length tests on official timing.
Free, no card. You also get 36 practice questions a day: 12 easy, 12 medium and 12 hard.
The DailySTEP 1
- Three hearts. A miss costs one.
- Streaks pay. ×2 from three in a row, ×3 from six.
- Your longest streak. Beat it tomorrow.
Full-length tests
The real test, rehearsed.
98 questions across four modules, in the digital SAT’s order and on its timing, with a highlighter, a question map and a timer you can see.
How it works
One run a day. One skill at a time.
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1
Play the Daily.
A quick run with three hearts. String right answers together and the questions get harder and the points multiply.
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2
Miss one, learn why.
Every question is tagged by domain and skill, and every answer comes with an explanation.
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3
Drill that skill.
Practice any single skill at any difficulty, or just the questions you got wrong.
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4
Beat your best.
Come back tomorrow and climb. Progress shows your accuracy and your strongest skills.
Built around the real SAT blueprint.
Every question is tagged by section, domain, skill and difficulty, so you can practice exactly what you need. Full tests run like test day: two Reading & Writing modules, a break, then two Math modules.
Free daily practice
12 easy, 12 medium and 12 hard questions free every day, each with a full explanation. Filter by section, domain, skill and difficulty. Resets at midnight.
Real SAT timing
Take any test on official timing, extended 1.5× time, or untimed to focus purely on accuracy.
Adaptive full-length tests
Four modules in official order. The second module of each section adapts to how you did on the first.
Vocabulary
1,023 essential SAT words. Browse the list, flip flashcards, or quiz yourself.
Your progress
Accuracy across daily practice and full tests, your strongest skills, and the ones that need the most help.
Games
PEAK Survivor, Hole and Peak Defense: three games powered by SAT practice questions.
Explanations
Every answer, explained.
Not just the right letter: how to get there, and why the tempting answer is wrong.
MathProblem-Solving and Data AnalysisHard
A store raises the price of a jacket by 20%. Later, it lowers the new price by 20%. The final price is what percent of the original price?
A80%
B96%Correct
C100%The trap
D104%
Check with $100: $100→then$120→then$96
Turn each change into a multiplier.
Up 20% means × 1.20. Down 20% means × 0.80.
Apply them in order.
1.20 × 0.80 = 0.96
Read the answer.
The final price is 96% of the original. That’s B.
Why not 100%?
The 20% cut is taken from the higher price, so it removes more than the 20% increase added.
Test day
What test day looks like.
Every Peakscor full test follows this order. In the standard tests, the second module of each section adapts to how you did on the first.
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Reading & Writing · Module 1
27 questions32 min
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Reading & Writing · Module 2
27 questions32 min
Adapts to how you did on Module 1. -
Break
10 min
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Math · Module 1
22 questions35 min
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Math · Module 2
22 questions35 min
Adapts to how you did on Module 1.
98 questions · 2 hr 14 min of testing, plus the break
Peakscor by the numbers
- 36free practice questions every day
- 98questions in every full-length test
- 1,023SAT vocabulary words
- 1.5×extended-time option on every test
Plans
Free every day. Pro when you’re serious.
The free plan is the real thing, not a trial. Pro removes the limits. Peak adds the full course and a plan to test day.
Pro
$20a month, or $200 a year
- Everything in Free
- Unlimited practice, no daily limit
- Every full-length test and Challenge test
Peak
$29a month, or $280 a year
- Everything in Pro
- The full Learn course: every lesson and mastery quiz
- Peak Plan, day by day to test day
Prices in US dollars. Cancel anytime.
FAQ
Questions, answered.
The Daily, plus 36 practice questions every day: 12 easy, 12 medium and 12 hard, each with a full explanation. Full-length Test A, Challenge Test 1 and all 1,023 vocabulary words are free too. No card needed.
Pro is $20 a month or $200 a year: unlimited practice with no daily limit, plus every full-length test and Challenge test. Peak is $29 a month or $280 a year: everything in Pro, plus the full Learn course and Peak Plan. Cancel anytime from your account.
98 questions across four modules, in the digital SAT’s order: Reading & Writing Module 1 and Module 2 (27 questions each), a 10-minute break, then Math Module 1 and Module 2 (22 questions each). On official timing that’s 2 hr 14 min of testing. You get estimated section scores and a total at the end.
Yes. In the standard full-length tests, Module 2 of each section is the harder version if you get 60% or more of Module 1 right, and the easier version if you don’t. Challenge tests use the hardest material throughout.
Official timing, extended 1.5× time, or untimed, on every test, including the free ones. Extended time allows 48 minutes for each Reading & Writing module and about 52 for each Math module. Untimed removes the clock so you can focus on accuracy.
A quick run with three hearts. Each right answer builds your streak: the questions get harder as it grows, and your points multiply (×2 from three in a row, ×3 from six). A miss costs a heart and drops you back to easy. Best is your longest streak.
Every day at midnight. You get a fresh 12 easy, 12 medium and 12 hard.
No. Peakscor is an independent SAT practice tool, not affiliated with the College Board. Scores shown are estimates.
Your next point starts today.
Free, no card.
Ratios, rates, proportions and units · Lesson 1
Ratios: part-to-part and part-to-whole
A ratio compares two amounts. The ratio of to can be written to , or . Order matters: the amount the question names first goes first.
Suppose a trail mix contains only raisins and peanuts, in a ratio of 2 to 3 by weight. That ratio is part-to-part: raisins compared with peanuts. To compare a part with the whole, add the parts: . Raisins are of the mix and peanuts are . Raisins are not of the mix.
Find one part. If a bag of this mix weighs 600 grams, the bag holds 5 parts, so one part is grams. Raisins are 2 parts, 240 grams, and peanuts are 3 parts, 360 grams. If you know one amount instead of the total, use it the same way: 240 grams of raisins is 2 parts, so one part is 120 grams.
Equivalent ratios come from multiplying or dividing both terms by the same nonzero number: , and are the same ratio.
Linking two ratios. When two ratios share a quantity, such as and , rewrite them so the shared quantity has the same number in both. Multiply the first by 5 and the second by 2: and , so . Joining the ratios without this step gives a wrong three-part ratio.
| Comparison | Ratio | As a fraction |
|---|---|---|
| Raisins to peanuts (part to part) | ||
| Peanuts to raisins (part to part) | ||
| Raisins to whole mix (part to whole) | ||
| Peanuts to whole mix (part to whole) |
Worked example Easy
A school orchestra has 28 string players and 16 wind players. It has no other players.
What is the ratio of wind players to string players in the orchestra?
- 4 to 7Answer
- 7 to 4
- 4 to 11
- 7 to 11
How to solve it
- The question names wind players first, so the ratio is 16 to 28.
- Both numbers are divisible by 4: and .
- The ratio of wind players to string players is 4 to 7.
Why each choice is right or wrong
- A. Correct. Wind players to string players is 16 to 28, and dividing both terms by 4 gives 4 to 7.
- B. Incorrect. This is the ratio of string players to wind players, 28 to 16. The question names wind players first, so they go first.
- C. Incorrect. This compares wind players with the whole orchestra: 16 to , which simplifies to 4 to 11. The question compares wind players with string players only.
- D. Incorrect. This compares string players with the whole orchestra: 28 to 44, which simplifies to 7 to 11. The question asks for wind players to string players.
Worked example Medium
A bakery baked 196 loaves of bread on Saturday. Each loaf was either whole-wheat or white, and the ratio of whole-wheat loaves to white loaves was 3 to 4.
How many more white loaves than whole-wheat loaves did the bakery bake on Saturday?
- Answer
How to solve it
- The ratio 3 to 4 has parts in all.
- All 196 loaves make up the 7 parts, so one part is loaves.
- Whole-wheat loaves: . White loaves: .
- The difference is . White is one part more than whole-wheat, so the difference is exactly one part.
Why each choice is right or wrong
- A. Correct. One part is loaves. White is 4 parts and whole-wheat is 3, so the difference is 1 part, 28 loaves.
- B. Incorrect. 84 is the number of whole-wheat loaves, . The question asks how many more white loaves there were.
- C. Incorrect. This treats the part-to-part ratio as part-to-whole, as if whole-wheat were of all loaves: whole-wheat and white, a difference of . That would mean more whole-wheat than white, which contradicts the ratio.
- D. Incorrect. 112 is the number of white loaves, . The question asks how many more white loaves than whole-wheat loaves.
Trap Reading a part-to-part ratio as part-to-whole
A ratio of 2 to 3 does not mean the first part is of the total. Add the terms to get the whole: the first part is of it. Before you multiply a total by a fraction, ask whether the fraction's denominator is the whole or just the other part.
Trap Flipping the order, or answering for the wrong part
When the question asks for the ratio of A to B, the ratio of B to A is often one of the choices. Likewise, when it asks how many more of one part there are, the size of each part is often listed too. Reread the last line before you choose.
Desmos When Desmos isn’t faster
Ratio questions are about setting up the parts, and Desmos can't do that step for you. Count the parts and find one part by hand.
If the numbers are awkward, use Desmos as a calculator: type 4196/7 on an expression line and it shows 112. Put the multiplication first: after you type /, Desmos keeps the cursor in the denominator, so typing 196/74 would give unless you press the right arrow before typing *4. For linked ratios, rescale them on paper first. Desmos has no way to know which quantity the two ratios share.
Practice
Choose a section, then practice a whole domain or drill a single skill.
Full-length tests
Each test mirrors the digital SAT: 98 questions across four modules, 2 hr 14 min on official timing.
A little harder than the real SAT. These tests can run slightly tougher than test day, which makes them good practice: if you can handle these, the real one should feel easier. No question appears in more than one test, Challenge Tests included.
Challenge Tests Hardest of the hardest
Same 98-question format, but every question is drawn from the toughest SAT material: Challenging-tier math throughout and the hardest reading.
Vocab
Study the classic SAT vocabulary list. Browse, flip flashcards, or quiz yourself.
Free every day. Pro when you're serious.
Practice free every day. Pro removes the limits. Peak adds the full course and a plan to test day.
FREE
$0forever
- ✓ 12 easy + 12 medium + 12 hard daily
- ✓ Practice by any SAT domain
- ✓ Explanations on every question
- ✓ Test A and Challenge Test 1
- ✓ The first lesson of every Learn module
PRO
$200/ year
About $16.67 a month, save $40
- ✓ Everything in Free
- ✓ Unlimited daily practice
- ✓ Every full-length and Challenge test
- ✓ Every timing mode
Full course and plan
PEAK
$280/ year
About $23.33 a month, save $68
- ✓ Everything in Pro
- ✓ Every Learn lesson, summary and mastery quiz
- ✓ Peak Plan: a day-by-day plan to test day
- ✓ Cancel anytime
Prices in USD. Switch or cancel your plan at any time.