Lesson Worksheet: Probability: Certain, Likely, Unlikely, Impossible Mathematics

In this worksheet, we will practice describing probability using words like “certain,” “likely,” “equally likely,” “even chance,” “unlikely,” and “impossible.”

Q1:

If the spinner is spun once, determine whether it is certain, likely, unlikely, or impossible that the pointer stops on a number that is a multiple of 3.

  • Aimpossible
  • Blikely
  • Cunlikely
  • Dcertain

Q2:

Which outcome is least likely when spinning the arrow on this spinner?

  • A𝑄
  • B𝑆
  • C𝑅
  • D𝑃

Q3:

If this spinner is spun once, is it certain, likely, unlikely, or impossible that the pointer stops on the number 5 or 6?

  • Aunlikely
  • Bimpossible
  • Clikely
  • Dcertain

Q4:

If this spinner is spun, which of the following describe the probability that the pointer lands on blue?

  • AImpossible
  • BEqually likely for it to happen or not happen
  • CLikely
  • DCertain
  • EUnlikely

Q5:

Is it more likely, equally likely, or less likely that this spinner lands on red rather than green?

  • Aless likely
  • Bmore likely
  • Cequally likely

Q6:

If the spinner is spun once, is it certain, likely, unlikely, or impossible that the spinner lands on the number 6?

  • Acertain
  • Bimpossible
  • Clikely
  • Dunlikely

Q7:

If the spinner is spun once, determine whether it is certain, likely, unlikely, or impossible that the pointer stops on a number that is a multiple of 2.

  • Aimpossible
  • Blikely
  • Cunlikely
  • Dcertain

Q8:

If the spinner is spun once, determine whether it is certain, likely, unlikely, or impossible that the pointer stops on a number that is a multiple of 1.

  • Aimpossible
  • Blikely
  • Ccertain
  • Dunlikely

Q9:

If the spinner is spun once, determine whether it is certain, likely, unlikely, or impossible that the pointer stops on a number that is a multiple of 8.

  • Acertain
  • Blikely
  • Cimpossible
  • Dunlikely

Q10:

Which outcome is least likely when spinning the arrow on this spinner?

  • A𝑅
  • B𝑆
  • C𝑃
  • D𝑄

Q11:

If this spinner is spun once, it is certain, likely, unlikely, or impossible that it stops on an even number?

  • Aimpossible
  • Blikely
  • Cunlikely
  • Dcertain

Q12:

A spinner is divided into 10 equal sectors numbered 1 through 10. If the spinner is spun, is it certain, likely, unlikely, or impossible that it lands on a number less than 4?

  • Alikely
  • Bunlikely
  • Cimpossible
  • Dcertain

Q13:

What is the probability of rolling a number which is greater than 6 on a fair die?

Q14:

There are 15 letter tiles in a bag: six tiles are labeled S, eight tiles are labeled R, and one is labeled M. Which of the following describes how likely it is to choose the letter M?

  • AUnlikely
  • BCertain
  • CLikely
  • DImpossible

Q15:

A bag contains 35 marbles, 34 of which are blue. If a marble is picked out at random, what is the likelihood of it being blue?

  • Aunlikely
  • Bimpossible
  • Clikely
  • Dcertain

Q16:

The histogram shows the areas of some countries. How likely is it that any given country will have an area greater than 200 square kilometers?

  • AUnlikely
  • BLikely
  • CVery likely
  • DVery unlikely

Q17:

Which outcome is most likely when spinning the arrow on this spinner?

  • AQ
  • BR
  • CP
  • DS

Q18:

When this spinner is spun, which of the following describes the probability that the arrow lands on a sector that is NOT yellow?

  • ACertain
  • BUnlikely
  • Clikely
  • DEqually likely that it happens or does not happen
  • EImpossible

Q19:

Natalie will randomly choose one of the following days of the week to clean her bedroom:

  • Monday
  • Tuesday
  • Wednesday
  • Thursday
  • Friday
  • Saturday
  • Sunday

Fill in the blank: Choosing a day that starts with the letter S is equally likely as choosing a day that starts with the letter .

  • AF
  • BT
  • CW
  • DM

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