SumComb

How many of them to expect

Difficulty Stretch · Set xh340s

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  1. 1
    A spinner lands on red 1 time in every 10. It is spun 110 times. How many reds would you expect?

  2. 2
    A spinner lands on red 1 time in every 6. It is spun 126 times. How many reds would you expect?

  3. 3
    A spinner lands on red 1 time in every 5. It is spun 20 times. How many reds would you expect?

  4. 4
    A spinner lands on red 1 time in every 6. It is spun 84 times. How many reds would you expect?

  5. 5
    A spinner lands on red 1 time in every 2. It is spun 48 times. How many reds would you expect?

  6. 6
    A spinner lands on red 1 time in every 4. It is spun 60 times. How many reds would you expect?

  7. 7
    A spinner lands on red 1 time in every 5. It is spun 115 times. How many reds would you expect?

  8. 8
    A spinner lands on red 1 time in every 10. It is spun 150 times. How many reds would you expect?

  9. 9
    A spinner lands on red 1 time in every 5. It is spun 50 times. How many reds would you expect?

  10. 10
    A spinner lands on red 1 time in every 2. It is spun 36 times. How many reds would you expect?

  11. 11
    A spinner lands on red 1 time in every 5. It is spun 50 times. How many reds would you expect?

  12. 12
    A spinner lands on red 1 time in every 8. It is spun 152 times. How many reds would you expect?

  13. 13
    A spinner lands on red 1 time in every 6. It is spun 78 times. How many reds would you expect?

  14. 14
    A spinner lands on red 1 time in every 10. It is spun 270 times. How many reds would you expect?

  15. 15
    A spinner lands on red 1 time in every 10. It is spun 210 times. How many reds would you expect?

  16. 16
    A spinner lands on red 1 time in every 3. It is spun 15 times. How many reds would you expect?

  17. 17
    A spinner lands on red 1 time in every 6. It is spun 174 times. How many reds would you expect?

  18. 18
    A spinner lands on red 1 time in every 2. It is spun 24 times. How many reds would you expect?

  19. 19
    A spinner lands on red 1 time in every 3. It is spun 12 times. How many reds would you expect?

  20. 20
    A spinner lands on red 1 time in every 10. It is spun 140 times. How many reds would you expect?

What is in this set

Drawing 240 problems from this page produced 146 different ones, 61% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 7 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.

Next to this

How many different combinations

Numbers 2–15.

How many different combinations

Numbers 2–15.

All of probability

5 skills in this topic, 15 sets between them.

Printing it

The printed sheet carries no menus and no advertising, and the answer key is on its own page.