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 3
Proportions and scale drawings
A proportion says two ratios are equal. If 5 notebooks cost 12 dollars, 8 notebooks at the same price cost dollars, where . Both fractions are notebooks over dollars.
Set up with matching units. One safe setup: make each fraction one purchase, notebooks over dollars: for the first and for the second, so . Then cross-multiply: , so , which is 19.20 dollars. Comparing like with like also works, , as long as both sides pair the quantities the same way.
Sense-check the answer. More notebooks should cost more, and 19.20 is more than 12. If your answer goes the wrong way, one side of the proportion is probably upside down.
Two quantities are proportional when one is always the same multiple of the other: , where is the constant of proportionality. In a table, gives the same number on every row.
Scale. A map scale such as 1 centimeter : 5 kilometers is a ratio, and every length on the map is multiplied by the same factor to get the real length. Areas work differently. A 1 centimeter by 1 centimeter square on this map stands for a 5 kilometer by 5 kilometer square, which is 25 square kilometers. Areas scale by the square of the length factor.
Worked example Easy
On a map, 1.5 centimeters represents an actual distance of 12 kilometers. Two towns are 7 centimeters apart on the map.
What is the actual distance, in kilometers, between the two towns?
- Answer
How to solve it
- Set up the proportion with map centimeters on top and kilometers on the bottom: .
- Cross-multiply: , so .
- Another way: each map centimeter stands for kilometers, and .
Why each choice is right or wrong
- A. Incorrect. This puts one side of the proportion upside down, , which gives . A longer map distance must mean a longer real distance than 12 kilometers.
- B. Incorrect. This adds instead of scaling. The map distance grew by centimeters, and adding 5.5 to 12 gives 17.5. Each map centimeter is 8 kilometers, so the distances must be multiplied.
- C. Correct. One map centimeter represents kilometers, so 7 centimeters represent kilometers.
- D. Incorrect. This multiplies 7 by 12 to get 84, as if 1 centimeter (not 1.5) represented 12 kilometers.
Worked example Medium
A floor plan is drawn so that 1 inch on the plan represents 4 feet. A rectangular room is 3.5 inches long and 2.5 inches wide on the plan.
What is the area, in square feet, of the actual room?
- Answer
How to solve it
- Convert each length first: feet and feet.
- Area of the actual room: square feet.
- Check with the area factor: the plan's area is square inches, and each square inch stands for square feet. .
Why each choice is right or wrong
- A. Incorrect. 8.75 is the area on the plan, , in square inches. It still has to be scaled to the actual room.
- B. Incorrect. This multiplies the plan's area, 8.75, by the length factor 4, giving 35. Each square inch on the plan stands for a 4 foot by 4 foot square, so multiply the area by 16.
- C. Incorrect. 48 feet is the perimeter of the actual room, . The question asks for the area.
- D. Correct. The room is feet by feet, so its area is square feet.
Trap One side of the proportion upside down
If one side is notebooks over dollars and the other is dollars over notebooks, the equation still solves, but to the wrong number. Label each side with its units before you cross-multiply, and sense-check the answer's size.
Trap Adding instead of scaling
Proportional quantities scale together: if one triples, the other triples. An increase in one quantity does not carry over as the same number added to the other. If a map distance goes from 2 centimeters to 6 centimeters, the real distance triples, whatever the scale. Adding the 4-centimeter increase to the real distance, as if it were 4 kilometers, ignores the scale.
Trap Scaling an area by the length factor
When each length is multiplied by , an area is multiplied by and a volume by . Multiplying an area by alone gives a choice the SAT can include as a distractor. The safest route is to scale each length first, then compute the area.
Desmos When Desmos isn’t faster
Cross-multiplying is two quick steps, so solving by hand is usually fastest. For awkward numbers, use Desmos as a calculator: type 7*12/1.5 on an expression line and it shows 56.
For a table of values, Desmos can find a constant of proportionality. Add a table, enter the values in the and columns, and type on a new line. Desmos reports the value of that fits best. It reports a even when the table isn't proportional, so still check that is the same on every row.
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.