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.
Area and volume · Lesson 1
Rectangles, triangles and composite shapes
Area measures the space inside a flat shape, in square units. Perimeter is the distance around its edge, in plain units. The area formulas for rectangles and triangles are on the reference sheet.
Rectangle: area and perimeter . A rectangle 9 units by 4 units has area 36 square units and perimeter 26 units.
Triangle: . The height is the distance from the base to the opposite vertex, measured at a right angle to the base. A slanted side is not the height. In a right triangle the two legs meet at a right angle, so one leg is the base and the other is the height. In the triangle below, the base is 10 and the height is 6, so the area is .
Composite shapes are built from simpler pieces. Either split the shape into rectangles and triangles and add their areas, or subtract: start with a bigger shape and remove the piece that is missing. A shaded region is usually the area of the outer shape minus the area of the unshaded part inside it.
Missing side lengths come from the sides across from them. In a shape whose angles are all right angles, walk once around the outline: the edges you travel going right add up to the edges going left, and the edges going up add up to the edges going down. In an L-shape, for example, the two top edges add up to the bottom edge, and the two right edges add up to the left edge.
Worked example Easy
In the triangle shown, the dashed segment is perpendicular to the side of length 14. What is the area of the triangle?
- Answer
How to solve it
- Use the side of length 14 as the base. The height must meet that base at a right angle, and the dashed segment does, so .
- The sides 13 and 15 are slanted, so neither one is the height.
- .
Why each choice is right or wrong
- A. Correct. Half of base times height: .
- B. Incorrect. This uses the slanted side 13 as the height: . The height must meet the base at a right angle, and only the dashed segment does.
- C. Incorrect. This leaves out the : is the area of a rectangle 14 by 12, twice the triangle's area.
- D. Incorrect. This makes both mistakes: it uses the slanted side 13 as the height and leaves out the , so .
Worked example Medium
In the figure shown, all angles are right angles. What is the area of the figure?
- Answer
How to solve it
- Split the figure with a horizontal cut at the height of the right side, 4. The bottom piece is a rectangle 12 by 4, with area 48.
- The top piece is 5 wide. Its height is the left side minus the bottom piece's height: . Its area is .
- Total: .
- Check by subtracting: the rectangle around the figure is . The empty top-right corner is wide and 5 tall, with area 35, and .
Why each choice is right or wrong
- A. Incorrect. 42 is the perimeter: . The question asks for the area, the space inside.
- B. Correct. The bottom rectangle is and the top rectangle is , so the area is .
- C. Incorrect. This uses the whole left side, 9, as the top piece's height: . The top piece starts where the bottom piece ends, so its height is . Using 9 counts a 5-by-4 strip twice.
- D. Incorrect. 108 is the area of the full 12-by-9 rectangle around the figure. The empty top-right corner, 7 by 5, has to be subtracted.
Trap Using a slanted side as the height
When a figure labels the slanted sides of a triangle, one of them can look like the height. Only a side that makes a right angle with the base, or a segment drawn perpendicular to it, is a height. In a triangle with an obtuse angle, the height can even fall outside the triangle, meeting the base's extension.
Trap Using a full side for one piece
When you split a composite shape, each piece gets only its own part of a side. In the L-shape above, the top piece is 5 tall, not 9. Sketch the cut and label each piece's length and width before you multiply.
Desmos When Desmos isn’t faster
Area questions are about choosing the right lengths, and Desmos can't read a figure for you. Decide which lengths to use by hand.
Desmos still works as a calculator. Type 0.51412 on a line and it shows 84. For a composite shape, type the whole sum at once, such as 124+55, which shows 73.
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.