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 2
Rates and unit rates
A rate compares two quantities measured in different units, such as 192 miles driven on 6 gallons of gas. A unit rate is the amount for one unit of the second quantity: miles per gallon. The word per means for each, and it signals division.
Once you have a unit rate, two moves answer most questions. Amount = rate × time (or rate × quantity). Time = amount ÷ rate. At 32 miles per gallon, 10 gallons take the car 320 miles, and a 288-mile trip uses gallons.
To compare two deals or two speeds, turn each into a unit rate with the same units, then compare the unit rates.
Working together. When two machines or people work on the same job at the same time, their rates add: what they finish together in one hour is what the first finishes in an hour plus what the second finishes. Their times do not add. Working together is always faster than either one alone.
Average speed for a trip is total distance ÷ total time. In general it is not the average of the speeds: when two legs cover equal distances, the trip spends more time at the slower speed, so the average speed is closer to the slower one. When the two speeds differ, it equals the average of the speeds only if the legs take equal times.
Worked example Easy
A printer prints 270 pages in 15 minutes at a constant rate.
At this rate, how many pages will the printer print in 40 minutes?
- Answer
How to solve it
- Find the unit rate: pages per minute.
- Multiply by the time: pages.
- Check: 40 minutes is more than twice 15 minutes, so the answer should be more than twice 270. It is.
Why each choice is right or wrong
- A. Incorrect. 18 is the unit rate, the number of pages printed in 1 minute. Multiply it by 40 minutes.
- B. Incorrect. 295 comes from adding instead of scaling: 40 minutes is 25 minutes more than 15, so it adds 25 to 270. Each extra minute adds 18 pages, not 1.
- C. Correct. The printer prints pages per minute, so in 40 minutes it prints pages.
- D. Incorrect. This multiplies 270 pages by 40 minutes, , and never divides by 15. The 270 pages took 15 minutes, not 1 minute.
Worked example Medium
Machine A makes 140 bolts per hour, and machine B makes 100 bolts per hour. The two machines start at the same time and each runs at its own constant rate.
How many hours will it take the two machines, working together, to make a total of 1,680 bolts?
- Answer
How to solve it
- Working together, the rates add: bolts per hour.
- Time = amount ÷ rate: hours.
- Check: in 7 hours, A makes bolts and B makes , and .
Why each choice is right or wrong
- A. Correct. Together the machines make bolts per hour, so 1,680 bolts take hours.
- B. Incorrect. This is the time for machine A alone, . With machine B helping, the job takes less time.
- C. Incorrect. This is the time for machine B alone, . Working together must be faster than either machine alone.
- D. Incorrect. This adds the two separate times, . When machines work at the same time, add their rates, not their times.
Trap Adding times instead of rates
When two workers share a job, adding the times each would take alone gives a time longer than either one alone, which can't be right. Add the rates (jobs or items per hour), then divide the job by the combined rate.
Trap Averaging two speeds
A boat travels 12 miles out at 20 miles per hour and 12 miles back at 30 miles per hour. The trip out takes hour and the trip back takes hour, so the average speed is miles per hour, not 25. The boat spends more time at the slower speed, so the average is closer to 20. Always divide total distance by total time.
Desmos When Desmos isn’t faster
Most rate questions take only a few operations, so the work is choosing them, not computing. Desmos doesn't help you decide whether to multiply or divide.
Desmos is still a good calculator. Typing 1680/(140+100) on an expression line shows 7, and the parentheses make sure the rates are added before you divide. For simple numbers such as , mental math is faster.
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.
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- ✓ Test A and Challenge Test 1
- ✓ The first lesson of every Learn module
PRO
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About $16.67 a month, save $40
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Full course and plan
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