Test de práctica PSAT
Las preguntas del test siguen en inglés.
Esta es una muestra gratis de 15 preguntas al estilo del PSAT/NMSQT digital. Mezcla preguntas de Reading and Writing sobre palabras en contexto, estructura del texto, uso de pruebas, conectores y gramática con preguntas de Math sobre álgebra, matemáticas avanzadas, análisis de datos y geometría, usando opción múltiple, marcar todas las que correspondan y completar huecos. Responde las 15 preguntas, después mira tu puntuación y lee la explicación de cada una.
A team of ecologists expected the restored wetland to fill with familiar species within a single season. Instead, the pace of recovery proved ______: five years in, only a third of the plant species catalogued before the site was drained had come back. Which choice completes the text with the most logical and precise word?
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Las 15 preguntas de un vistazo
¿Prefieres leer antes de jugar? Abajo están todas las preguntas de la muestra. Las respuestas y explicaciones quedan plegadas hasta que las abras.
1. A team of ecologists expected the restored wetland to fill with familiar species within a single season. Instead, the pace of recovery proved ______: five years in, only a third of the plant species catalogued before the site was drained had come back. Which choice completes the text with the most logical and precise word?
- A. immediate
- B. gradual
- C. erratic
- D. predictable
Ver respuesta y explicación
Respuesta: B. gradual
The second sentence contrasts a fast expectation with a slow result, so the blank needs a word meaning slow. Erratic would mean irregular rather than slow, and the text describes steady partial progress, not an unstable pattern.
2. In the 1930s a small group of highway engineers argued that concrete roads should be poured in short slabs separated by regular joints. Most of the profession, which preferred long continuous pours, ignored the idea. Nearly every concrete highway built today uses short slabs and joints. Which choice best describes the overall structure of the text?
- A. It presents a proposal, notes that the proposal was dismissed, and then reports that it later became standard practice.
- B. It describes a problem and then lists several competing solutions that engineers have proposed for it.
- C. It compares the careers of two groups of engineers and explains why one group earned more recognition.
- D. It defines a technical term and then gives several examples of the term being used incorrectly.
Ver respuesta y explicación
Respuesta: A. It presents a proposal, notes that the proposal was dismissed, and then reports that it later became standard practice.
Text structure questions ask what the sentences do, not what they are about, and here the three sentences move from proposal to rejection to acceptance. No competing solutions are listed and no term is defined, so those options describe a text that was never written.
3. A student club claimed that a new protected bike lane on Third Street had made cycling there safer. A researcher counted reported collisions involving cyclists on Third Street for the two years before the lane opened and the two years after. Which finding, if true, would most directly support the club's claim?
- A. Reported collisions involving cyclists on Third Street fell by half after the lane opened.
- B. The number of cyclists riding on Third Street rose sharply after the lane opened.
- C. Drivers surveyed said they felt more confident driving on Third Street after the lane opened.
- D. Collisions fell by half on a nearby street that never received a bike lane.
Ver respuesta y explicación
Respuesta: A. Reported collisions involving cyclists on Third Street fell by half after the lane opened.
The claim is about safety, so the supporting evidence has to be about harm, and fewer collisions on that street is the only option that measures it. More riders measures popularity, driver confidence is an opinion, and a matching drop on a street with no bike lane would actually weaken the claim by pointing to some other cause.
4. A city measured air quality at four sites for one year. The two sites beside the highway recorded higher average particulate levels than the two sites in residential neighborhoods, and particulate levels at all four sites were highest during the winter months. Which statements are supported by the data as described?
Marca todas las que correspondan.
- A. Average particulate levels were higher at the highway sites than at the residential sites.
- B. Particulate levels changed with the season at every site that was measured.
- C. Highway traffic was the only source of particulates anywhere in the city.
- D. Winter readings were the highest of the year at all four sites.
- E. Residential neighborhoods in other cities would show the same yearly pattern.
Ver respuesta y explicación
Respuesta: A. Average particulate levels were higher at the highway sites than at the residential sites., B. Particulate levels changed with the season at every site that was measured., D. Winter readings were the highest of the year at all four sites.
A supported statement only restates what the data actually shows, and here that is a highway versus residential difference plus a winter peak at every site. The other two options go past the data: one names a single cause the measurements cannot establish, and the other generalizes to cities that were never studied.
5. Which of the following sentences are punctuated correctly?
Marca todas las que correspondan.
- A. Because the storm knocked out power, the museum closed early.
- B. The museum closed early, the storm had knocked out power.
- C. The storm knocked out power; the museum closed early.
- D. The museum, which closed early on Friday, reopened on Saturday.
- E. The museum closed early on Friday and, reopened on Saturday.
Ver respuesta y explicación
Respuesta: A. Because the storm knocked out power, the museum closed early., C. The storm knocked out power; the museum closed early., D. The museum, which closed early on Friday, reopened on Saturday.
A comma alone cannot join two complete sentences, which is why the second option is a comma splice and the semicolon version is fine. The fourth option is correct because a nonessential clause takes a comma on both sides, and the last option puts a comma between a conjunction and the verb it introduces, which splits the sentence for no reason.
6. Choose the transition that fits.
Sea otters eat large numbers of sea urchins, and sea urchins graze on kelp. _____, kelp forests have grown back along stretches of coast where otters have returned.
Opciones para el hueco 1: However, Therefore, Nevertheless, In contrast
Ver respuesta y explicación
Respuesta: Therefore
The first sentence sets up a chain of cause and effect, and the second sentence states its result, so the blank needs a transition that signals a consequence. However, nevertheless and in contrast all signal a reversal, and nothing in the second sentence contradicts the first.
7. If 3(x - 4) = 2x + 5, what is the value of x?
- A. 7
- B. 11
- C. 17
- D. 21
Ver respuesta y explicación
Respuesta: C. 17
Distribute first to get 3x - 12 = 2x + 5, subtract 2x from both sides to get x - 12 = 5, then add 12 to get x = 17. Checking is quick and worth the seconds: 3(17 - 4) = 39 and 2(17) + 5 = 39.
8. A tank holds 120 gallons of water and drains at a constant rate of 8 gallons per minute. Which equation gives the number of gallons g remaining after m minutes?
- A. g = 120 + 8m
- B. g = 120 - 8m
- C. g = 8m - 120
- D. g = 8(120 - m)
Ver respuesta y explicación
Respuesta: B. g = 120 - 8m
In a linear model the starting amount is the constant and the constant rate is the coefficient of the variable, and draining makes that rate negative. A quick sanity check confirms it: at m = 0 the tank holds 120 gallons, and at m = 15 it holds 120 - 120 = 0 gallons.
9. A researcher randomly selected 200 students from a high school of 1,400 students and found that 60 percent of the students surveyed take the bus to school. Which conclusions are appropriate?
Marca todas las que correspondan.
- A. About 840 students at this high school take the bus.
- B. The result can reasonably be generalized to all students at this high school.
- C. The result can reasonably be generalized to all high school students in the country.
- D. Exactly 120 of the students surveyed take the bus.
- E. Taking the bus causes students to arrive at school on time more often.
Ver respuesta y explicación
Respuesta: A. About 840 students at this high school take the bus., B. The result can reasonably be generalized to all students at this high school., D. Exactly 120 of the students surveyed take the bus.
A random sample supports estimates about the population it was drawn from, so 60 percent of 1,400 gives roughly 840 bus riders at this school, and 60 percent of the 200 surveyed is exactly 120 students. The sample says nothing about other schools, and a survey with no comparison and no experiment cannot show that one thing causes another.
10. Complete the sentence.
A jacket originally priced at 80 dollars is on sale for 25 percent off. The sale price is _____ dollars.
Opciones para el hueco 1: 20, 55, 60, 75
Ver respuesta y explicación
Respuesta: 60
Taking 25 percent off leaves 75 percent of the price, so multiply once: 0.75 times 80 equals 60. The trap answer is 20, which is the discount itself rather than what you pay.
11. What are the solutions to x squared minus 5x minus 14 = 0?
- A. x = -7 and x = 2
- B. x = -2 and x = 7
- C. x = -14 and x = 1
- D. x = 2 and x = 7
Ver respuesta y explicación
Respuesta: B. x = -2 and x = 7
Look for two numbers that multiply to -14 and add to -5, which are -7 and 2, so the equation factors as (x - 7)(x + 2) = 0. Setting each factor to zero gives x = 7 and x = -2, and both check out: 49 - 35 - 14 = 0 and 4 + 10 - 14 = 0.
12. A colony of 400 bacteria doubles in size every 3 hours. Which function gives the population P after t hours?
- A. P(t) = 400 times 2 to the power of 3t
- B. P(t) = 400 times 2 to the power of t/3
- C. P(t) = 400 times 3 to the power of t/2
- D. P(t) = 400 + 2t/3
Ver respuesta y explicación
Respuesta: B. P(t) = 400 times 2 to the power of t/3
In an exponential model the base is the growth factor and the exponent counts how many growth periods have passed, so t hours contain t/3 doubling periods. Test it at t = 3: the exponent is 1 and the population is 800, which is one doubling. The first option multiplies the exponent by 3 instead of dividing by it, so at t = 3 it would give 400 times 2 to the ninth, or 204,800.
13. Complete the sentence.
In a right triangle, one of the two acute angles measures 35 degrees. The other acute angle measures _____ degrees.
Opciones para el hueco 1: 45, 55, 65, 145
Ver respuesta y explicación
Respuesta: 55
The three angles of any triangle add to 180 degrees, and the right angle already uses 90 of them, so the two acute angles must add to 90. That makes the missing angle 90 minus 35, or 55 degrees.
14. A circle has a circumference of 12 pi. What is the area of the circle?
- A. 6 pi
- B. 12 pi
- C. 36 pi
- D. 144 pi
Ver respuesta y explicación
Respuesta: C. 36 pi
Circumference is 2 pi r, so 2 pi r = 12 pi gives a radius of 6. Area is pi r squared, which is pi times 36, or 36 pi, and the reference sheet inside the testing app lists both formulas if you blank on them.
15. In right triangle ABC, the right angle is at C, the hypotenuse AB has length 13, and side BC has length 5. What is the value of sin A?
- A. 5/13
- B. 12/13
- C. 5/12
- D. 13/5
Ver respuesta y explicación
Respuesta: A. 5/13
Sine is the side opposite the angle divided by the hypotenuse, and the side opposite angle A is BC, which gives 5/13. Note that 12/13 is cos A and 5/12 is tan A, since the third side works out to 12 by the Pythagorean theorem.
Qué entra de verdad en el PSAT/NMSQT digital
El PSAT/NMSQT se hace en ordenador o tableta dentro de la app Bluebook del College Board, no en papel. Tiene dos secciones. Reading and Writing te da 54 preguntas en 64 minutos, y Math te da 44 preguntas en 70 minutos, o sea unas 2 horas y 14 minutos de examen más un descanso entre las dos secciones. La puntuación total va de 320 a 1520.
Cada sección está partida en dos módulos, y el examen es adaptativo por secciones. Cómo te salga el primer módulo decide si el segundo módulo de esa sección lleva preguntas más difíciles o más fáciles, así que un segundo módulo que se hace fácil no es automáticamente mala señal y uno que se hace durísimo suele indicar que el primero fue bien. Cada pregunta de Reading and Writing viene con su propio texto corto, normalmente de entre 25 y 150 palabras, y están agrupadas por dominio: palabras en contexto y estructura del texto, uso de pruebas e inferencias, conectores y revisión retórica, y convenciones del inglés estándar. Math cubre álgebra, matemáticas avanzadas, resolución de problemas y análisis de datos, y geometría y trigonometría. Alrededor de una cuarta parte de las preguntas de mates te piden escribir tu propia respuesta en vez de elegir una, se permite calculadora en toda la sección de mates, la app lleva incorporada una hoja de fórmulas, y no hay penalización por fallar, así que no dejes ninguna en blanco.
Hay cosas que varían y que conviene consultar con tu instituto. En esta familia hay tres exámenes: el PSAT 8/9, el PSAT 10 y el PSAT/NMSQT. Solo el PSAT/NMSQT hecho en eleventh grade puede clasificar a un estudiante para el National Merit, así que el mismo examen hecho en tenth grade es solo práctica. Cada centro elige su fecha de examen dentro de las ventanas que ofrece el College Board, y los cortes del Selection Index que se usan para el National Merit los fija cada estado por separado y se mueven de año en año, así que un número que leas en un foro puede ser de otro estado o de otro año.
Cómo usar esta muestra
Estas 15 preguntas reproducen la mezcla de contenidos del examen real, no su longitud ni su comportamiento. Cinco preguntas cubren los dominios de Reading and Writing y diez cubren los cuatro dominios de mates. Esta muestra no se adapta, así que cada pregunta que ves es la misma que ve todo el mundo, y un test corto no puede darte una puntuación sobre 1520.
Hazla de una sentada y sin apuntes. En el examen real el ritmo sale a poco más de un minuto por pregunta de Reading and Writing y poco más de un minuto y medio por pregunta de mates, así que intenta acercarte a eso aquí. Después lee la explicación de cada pregunta, también de las que acertaste, porque un acierto de suerte y una respuesta sólida se ven igual en la pantalla de puntuación.
Repasa por dominio, no por pregunta. Si fallaste la pregunta del conector y la de la puntuación, el siguiente paso útil es una sesión sobre límites de oración y palabras de enlace, no memorizar esas dos preguntas. En mates, rehaz en papel en blanco cualquier problema que fallaste antes de volver a leer la solución. Leer una respuesta resuelta parece aprender y casi nunca lo es.
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Escrito por el equipo de StudyPDF. Actualizado el 2026-08-19.