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Grade 7 Math · Probability

Grade 7 Probability Practice Test

Build Grade 7 Math skills with five 10-question practice tests on theoretical probability, experimental probability, complements, compound events, sample spaces, and expected outcomes.

Probability Practice Tests

These Grade 7 Math practice tests help students describe and calculate chance. Students work with theoretical and experimental probability, complements, sample spaces, independent events, compound events, and expected outcomes.

Skills covered

  • Calculating theoretical probability from favorable and total outcomes
  • Finding the probability of a complement
  • Using sample spaces and the multiplication rule for independent events
  • Comparing experimental and theoretical probability
  • Finding expected numbers of outcomes
  • Solving with replacement and without replacement

How to use these practice tests

Probability is the ratio of favorable outcomes to total equally likely outcomes. A complement has probability 1 − P(event). For independent events, multiply the probabilities; for experimental probability, divide observed successes by the number of trials.

For more Grade 7 Math practice, return to the Grade 7 Math category.

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Grade 7 Probability Practice Tests

A 10-question Grade 7 Math practice test on theoretical and experimental probability, complements, sample spaces, independent events, and expected outcomes.

Count favorable and total outcomes, simplify probabilities, use complements when helpful, and multiply probabilities for independent events.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

A coin is flipped 20 times and shows heads 12 times. What is the experimental probability of heads?

Please select an answer first.

Correct answer: A

The correct answer is 35\frac{3}{5}.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Experimental probability is successes divided by trials: 1220=35\frac{12}{20}=\frac{3}{5}.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Experimental probability is successes divided by trials: 1220=35\frac{12}{20}=\frac{3}{5}.

2. QuestionMultiple choice

A spinner is spun 50 times and lands on blue 18 times. What is the experimental probability of blue?

Please select an answer first.

Correct answer: B

The correct answer is 925\frac{9}{25}.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 1850=925\frac{18}{50}=\frac{9}{25}.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 1850=925\frac{18}{50}=\frac{9}{25}.

3. QuestionMultiple choice

A die is rolled 30 times and a 6 appears 5 times. What is the experimental probability of rolling a 6?

Please select an answer first.

Correct answer: C

The correct answer is 16\frac{1}{6}.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 530=16\frac{5}{30}=\frac{1}{6}.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 530=16\frac{5}{30}=\frac{1}{6}.

4. QuestionMultiple choice

An experiment has 40 trials and 28 successes. What is the experimental probability of success?

Please select an answer first.

Correct answer: D

The correct answer is 0.70.7.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 28÷40=0.728\div40=0.7.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 28÷40=0.728\div40=0.7.

5. QuestionMultiple choice

A bag is sampled 25 times and red is selected 15 times. What is the experimental probability of red?

Please select an answer first.

Correct answer: A

The correct answer is 35\frac{3}{5}.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 1525=35\frac{15}{25}=\frac{3}{5}.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 1525=35\frac{15}{25}=\frac{3}{5}.

6. QuestionMultiple choice

A coin is flipped 60 times and tails appears 27 times. What is the experimental probability of tails?

Please select an answer first.

Correct answer: B

The correct answer is 0.450.45.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 27÷60=0.4527\div60=0.45.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 27÷60=0.4527\div60=0.45.

7. QuestionMultiple choice

A player makes 62 of 100 shots. What is the experimental probability of making a shot?

Please select an answer first.

Correct answer: C

The correct answer is 0.620.62.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 62÷100=0.6262\div100=0.62.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 62÷100=0.6262\div100=0.62.

8. QuestionMultiple choice

An outcome occurs 20 times in 80 trials. What is the experimental probability of that outcome?

Please select an answer first.

Correct answer: D

The correct answer is 0.250.25.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 20÷80=0.2520\div80=0.25.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 20÷80=0.2520\div80=0.25.

9. QuestionMultiple choice

A spinner lands on green 35 times in 50 spins. What is the experimental probability of green?

Please select an answer first.

Correct answer: A

The correct answer is 0.70.7.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 35÷50=0.735\div50=0.7.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 35÷50=0.735\div50=0.7.

10. QuestionMultiple choice

Out of 200 customers, 30 choose a particular option. What is the experimental probability?

Please select an answer first.

Correct answer: B

The correct answer is 0.150.15.

  1. Describe the sample space: Count the equally likely outcomes or identify the favorable outcomes for the event.
  2. Calculate the probability: Compute 30÷200=0.1530\div200=0.15.
  3. Check the result: Confirm that the probability is between 0 and 1 and that the fraction or decimal is simplified.

Compute 30÷200=0.1530\div200=0.15.

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Frequently asked questions about Grade 7 Probability

What is theoretical probability?

Theoretical probability is the ratio of favorable outcomes to all equally likely outcomes in the sample space.

What is experimental probability?

Experimental probability is found by dividing the number of observed successes by the total number of trials.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 7 Probability questions in total.