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ACT Math · Hard

ACT hard practice questions

48 of the 336 ACT math questions in the library are filed at the hard difficulty band, across 6 topics.

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This page lists the 48 ACT records in this site's own question file, /assets/data/questions.json, whose recorded difficulty field is Hard. The same records also appear on the act topic pages and in the full question table.

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By topic

TopicHard questions
Pre-Algebra8
Elementary Algebra8
Intermediate Algebra8
Coordinate Geometry8
Plane Geometry8
Trigonometry8

By subtopic

TopicSubtopicQuestions
Coordinate GeometryCircles in the coordinate plane2
Coordinate GeometryDistance and midpoint2
Coordinate GeometryIntroduction to conics2
Coordinate GeometryLines, slopes, and intercepts2
Elementary AlgebraAbsolute value equations and inequalities2
Elementary AlgebraPolynomial addition and multiplication2
Elementary AlgebraSingle-variable linear equations2
Elementary AlgebraSubstitution and evaluation2
Intermediate AlgebraArithmetic and geometric sequences2
Intermediate AlgebraFunction notation and composition2
Intermediate AlgebraQuadratic equations2
Intermediate AlgebraSystems of equations and matrices2
Plane GeometryCircles, arcs, and chords2
Plane GeometryPolygons, perimeter, and area2
Plane GeometryThree-dimensional figures2
Plane GeometryTriangles and the Pythagorean theorem2
Pre-AlgebraElementary probability2
Pre-AlgebraFractions, decimals, and integers2
Pre-AlgebraMean, median, mode, and range2
Pre-AlgebraRatios, proportions, and percentages2
TrigonometryBasic trig identities2
TrigonometryGraphs of sine and cosine2
TrigonometryRight triangle trigonometry2
TrigonometryThe unit circle and special angles2

All 48 questions

IDTopicSubtopicQuestion
act-q-00230Pre-AlgebraFractions, decimals, and integersIf 8x − 9 = 7, what is the value of x?
act-q-00236Pre-AlgebraFractions, decimals, and integersIf 8x + 4 = -20, what is the value of x?
act-q-00244Pre-AlgebraRatios, proportions, and percentagesThe price of an item decreased from $111 to $75. What was the percent change?
act-q-00250Pre-AlgebraRatios, proportions, and percentagesThe price of an item decreased from $129 to $92. What was the percent change?
act-q-00258Pre-AlgebraMean, median, mode, and rangeThe five values in a data set are 64, 66, 58, 54, 34. What is the mean?
act-q-00264Pre-AlgebraMean, median, mode, and rangeThe five values in a data set are 27, 39, 68, 32, 64. What is the mean?
act-q-00272Pre-AlgebraElementary probabilityA bag contains 4 red marbles and 5 blue marbles. If one marble is drawn at random, what is the probability that it is red?
act-q-00278Pre-AlgebraElementary probabilityA bag contains 3 red marbles and 4 blue marbles. If one marble is drawn at random, what is the probability that it is red?
act-q-00286Elementary AlgebraSingle-variable linear equationsIf 8x − 5 = 35, what is the value of x?
act-q-00292Elementary AlgebraSingle-variable linear equationsIf 8x + 1 = 49, what is the value of x?
act-q-00300Elementary AlgebraPolynomial addition and multiplicationWhat is the sum of the solutions to the equation x² − 5x = 0?
act-q-00306Elementary AlgebraPolynomial addition and multiplicationWhat is the sum of the solutions to the equation x² − 7x + 6 = 0?
act-q-00314Elementary AlgebraSubstitution and evaluationIf f(x) = 3x² − 3, what is the value of f(6)?
act-q-00320Elementary AlgebraSubstitution and evaluationIf f(x) = 5x² − 2, what is the value of f(6)?
act-q-00328Elementary AlgebraAbsolute value equations and inequalitiesWhat is the sum of all values of x that satisfy |x − 2| = 8?
act-q-00334Elementary AlgebraAbsolute value equations and inequalitiesWhat is the sum of all values of x that satisfy |x − 5| = 7?
act-q-00342Intermediate AlgebraQuadratic equationsWhat is the sum of the solutions to the equation x² + 1x = 0?
act-q-00348Intermediate AlgebraQuadratic equationsWhat is the sum of the solutions to the equation x² − 5x + 4 = 0?
act-q-00356Intermediate AlgebraFunction notation and compositionIf f(x) = 4x² − 5, what is the value of f(4)?
act-q-00362Intermediate AlgebraFunction notation and compositionIf f(x) = 2x² − 5, what is the value of f(5)?
act-q-00370Intermediate AlgebraArithmetic and geometric sequencesAn arithmetic sequence has first term 3 and common difference 2. What is the 19th term?
act-q-00376Intermediate AlgebraArithmetic and geometric sequencesAn arithmetic sequence has first term 6 and common difference 2. What is the 13th term?
act-q-00384Intermediate AlgebraSystems of equations and matricesConsider the system of equations: 5x + 5y = -20 4x − 5y = -16 What is the value of x?
act-q-00390Intermediate AlgebraSystems of equations and matricesConsider the system of equations: 5x + 1y = 23 5x − 2y = 14 What is the value of x?
act-q-00398Coordinate GeometryLines, slopes, and interceptsWhat is the slope of the line passing through (5, 4) and (2, -4)?
act-q-00404Coordinate GeometryLines, slopes, and interceptsWhat is the slope of the line passing through (5, -1) and (4, 4)?
act-q-00412Coordinate GeometryDistance and midpointIn a right triangle, the two legs have lengths 6 and 8. What is the length of the hypotenuse?
act-q-00418Coordinate GeometryDistance and midpointIn a right triangle, the two legs have lengths 9 and 12. What is the length of the hypotenuse?
act-q-00426Coordinate GeometryCircles in the coordinate planeA circle has radius 8. What is its area, in terms of π?
act-q-00432Coordinate GeometryCircles in the coordinate planeA circle has radius 5. What is its area, in terms of π?
act-q-00440Coordinate GeometryIntroduction to conicsA circle has radius 4. What is its area, in terms of π?
act-q-00446Coordinate GeometryIntroduction to conicsA circle has radius 12. What is its area, in terms of π?
act-q-00454Plane GeometryTriangles and the Pythagorean theoremIn a right triangle, the two legs have lengths 8 and 15. What is the length of the hypotenuse?
act-q-00460Plane GeometryTriangles and the Pythagorean theoremIn a right triangle, the two legs have lengths 5 and 12. What is the length of the hypotenuse?
act-q-00468Plane GeometryPolygons, perimeter, and areaA circle has radius 12. What is its area, in terms of π?
act-q-00474Plane GeometryPolygons, perimeter, and areaA circle has radius 9. What is its area, in terms of π?
act-q-00482Plane GeometryCircles, arcs, and chordsA circle has radius 9. What is its area, in terms of π?
act-q-00488Plane GeometryCircles, arcs, and chordsA circle has radius 8. What is its area, in terms of π?
act-q-00496Plane GeometryThree-dimensional figuresA cylinder has radius 8 and height 12. What is its volume, in terms of π?
act-q-00502Plane GeometryThree-dimensional figuresA cylinder has radius 5 and height 9. What is its volume, in terms of π?
act-q-00510TrigonometryRight triangle trigonometryWhat is the value of sin(60°)?
act-q-00516TrigonometryRight triangle trigonometryWhat is the value of sin(45°)?
act-q-00524TrigonometryThe unit circle and special anglesWhat is the value of sin(0°)?
act-q-00530TrigonometryThe unit circle and special anglesWhat is the value of sin(45°)?
act-q-00538TrigonometryBasic trig identitiesWhat is the value of sin(0°)?
act-q-00544TrigonometryBasic trig identitiesWhat is the value of sin(30°)?
act-q-00552TrigonometryGraphs of sine and cosineWhat is the value of sin(60°)?
act-q-00558TrigonometryGraphs of sine and cosineWhat is the value of sin(60°)?

All ACT difficulty bands · All 560 questions in the library