Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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EXERCISES

Find the probability of each event. 

  • Question 1 (request help)

    Graciela picks a white mouse at random from a bin of 8 white mice, 2 gray mice, and 2 brown mice.

  • Question 2 (request help)

    Theo spins a spinner that has 12 equal sections marked 1 through 12. It does not land on 1.

  • Question 3 (request help)

    Tania flips a coin three times. The coin lands on heads twice and on tails once, not necessarily in that order.

  • Question 4 (request help)

    Students are randomly assigned two-digit codes. Each digit is either 1, 2, 3, or 4. Guy is given the number 11.

  • Question 5 (request help)

    Patty tosses a coin and rolls a number cube.

    a. Find the probability that the coin lands on heads and the cube lands on an even number.

  • Question 5 (request help)

    b. Patty tosses the coin and rolls the number cube 60 times. Predict how many times the coin will land on heads and the cube will land on an even number.

  •     times
  • Question 6 (request help)

    Rajan’s school is having a raffle. The school sold raffle tickets with 3-digit numbers. Each digit is either 1, 2, or 3. The school also sold 2 tickets with the number 000. Which number is more likely to be picked, 123 or 000?

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