Grade 7Mathpractice16 questions

The probability scale

Grade 7: probabilities from 0 to 1, equally likely outcomes, probability as a fraction, probability of an event not happening, experimental results.

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Free to play. Teams answer on one screen; your phone is the remote. No student devices.

Questions

  1. Which number describes an event that is impossible?

    • 0
    • 0.5
    • 1
    • 10
    Show answer0

  2. Which probability describes an event that is certain to happen?

    • 0
    • 0.5
    • 1
    • 100
    Show answer1

  3. A probability can never be greater than 1. (True or false?)

    Show answerTrue

  4. Which event has an even chance of happening?

    • Getting heads when you flip a fair coin
    • Rolling a 5 or 6 on a fair die
    • Rolling a 6 on a fair die
    • Rolling a number less than 7 on a die
    Show answerGetting heads when you flip a fair coin

  5. A fair die is rolled. What is the probability of getting a 4?

    • 1/3
    • 1/4
    • 1/6
    • 4/6
    Show answer1/6

  6. A bag has 3 red and 5 blue counters. One is picked at random. P(red) = ?

    • 1/3
    • 3/5
    • 3/8
    • 5/8
    Show answer3/8

  7. A fair die is rolled. What is the probability of an even number?

    • 1/2
    • 1/3
    • 1/6
    • 2/3
    Show answer1/2

  8. If P(rain) = 0.3, then the probability of no rain is 0.7. (True or false?)

    Show answerTrue

  9. The probability that a bus is late is 2/5. What is the probability it is not late?

    • 1/5
    • 2/5
    • 3/5
    • 5/3
    Show answer3/5

  10. The chance of winning a game is 0.65. What is the chance of not winning? (Answer out loud)

    Show answer0.35

  11. A spinner has 5 equal sections numbered 1 to 5. P(number greater than 3) = ?

    • 1/5
    • 2/3
    • 2/5
    • 3/5
    Show answer2/5

  12. If you flip a fair coin 10 times, you must get exactly 5 heads. (True or false?)

    Show answerFalse

  13. A coin lands heads 20 times in 50 flips. What is the experimental P(heads)?

    • 1/2
    • 2/5
    • 20/30
    • 3/5
    Show answer2/5

  14. A bag has 4 green and 6 yellow sweets. What is P(not green) as a fraction? (Answer out loud)

    Show answer6/10 (or 3/5)

  15. A drawing pin is dropped 40 times and lands point up 10 times. Experimental P(point up)? (Answer out loud)

    Show answer1/4 (or 0.25)

  16. A bag has 12 counters. P(blue) = 1/3. How many counters are blue?

    • 3
    • 4
    • 6
    • 9
    Show answer4

Play it as a game

Tile GrabAnswer right to flip a tile. Points, stars, bombs and magnets that steal points.Dare BoardPick a tile first: 1 to 5 points, and the higher the tile, the harder the question. One tile is a Double dare!Prize ClimbAnswer right to climb ten prize steps, then bank your stars or climb on. Three lifelines help.Ring the BellEvery team answers every question. A miss costs a heart; the last team standing rings the bell.

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