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Complement Rule

Probability that A does not happen

Grade 6 · Complement Rule

Easy 20 questions Worksheet #54897 For Complement Rule

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MathDigits Worksheet

Grade 6 · Complement Rule

Easy · 20 questions · Worksheet #54897 · Complement Rule

Name: ________________________

Date: ______________ Score: ______

  1. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  2. fill If P(A) = 0.4, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  3. fill If P(A) = 0.75, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  4. fill If P(A) = 0.3, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  5. fill If P(A) = 0.25, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  6. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  7. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  8. fill If P(A) = 0.3, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  9. fill If P(A) = 0.3, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  10. fill If P(A) = 0.4, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  11. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  12. fill If P(A) = 0.75, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  13. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  14. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  15. fill If P(A) = 0.2, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  16. fill If P(A) = 0.25, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  17. fill If P(A) = 0.3, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  18. fill If P(A) = 0.25, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  19. fill If P(A) = 0.4, find P(not A). (P(not A) = 1 − P(A))
    ______________________________
  20. fill If P(A) = 0.3, find P(not A). (P(not A) = 1 − P(A))
    ______________________________

Updated July 2026

FAQs

What is Complement Rule?

Complement Rule (complement) is a statistics & probability relationship written as Probability that A does not happen or P(not A) = 1 − P(A). Students use it to solve unknowns when enough values are known.

How do you calculate Complement Rule step by step?

Write Probability that A does not happen, substitute the known numbers carefully, then simplify. Worked walkthrough: P(rain) = 0.3 P(no rain) = 0.7.

When is Complement Rule taught in school?

Complement Rule usually appears in statistics & probability units during middle or secondary school. Match difficulty with MathDigits grade worksheets so practice fits the curriculum year.

What is a real example of Complement Rule?

On this page the worked result is 0.7. Generate a formula worksheet below for more unique practice sets.

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