Probability from 0 to 1 and the Complement
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Probability from 0 to 1 and the Complement
Probability from 0 to 1 for Grades 6 and 7: probabilities to describe as impossible, unlikely, likely, or certain, two events to compare, the complement of an event to name, and complements to work out as a fraction, a decimal, or a percent. With an answer key.
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Teach it first
Complementary EventsA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Goes with
- Complementary Events
- Printing
- Black and white
- Related curriculum
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Give the probability of an event as a fraction, decimal or percent from 0 to 1, list sample spaces with tables and tree diagrams, find probabilities of compound events, and check a probability worked out in theory against the results of an experiment.
Reviewed by Mr. Daniel Carter, Teacher. How we check worksheets
How to use this sheet
- Act out a few questions with a real spinner, coins or a bag of cubes before the sheet.
- Have the child explain each answer: "It is unlikely because there is only one red."
- For experiments, have the child predict first, then compare the prediction with the results.
Common mistakes
- Thinking a result that has not happened for a while is "due". Each coin flip is new.
- Mixing up impossible and unlikely. Impossible means it can never happen.
- Writing a probability greater than 1. A probability is between 0 and 1.
