How likely? Chances from 0 to 1

Answer Key - Grade 7 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. 1.

   Noah draws a card from a deck with only star, moon and sun cards. P(star) = 0.3 and P(moon) = 0.45. What is P(sun), as a decimal?

   0.25
2. 2.

   Pia plays a game that ends in a win, a tie or a loss, and the winner wears a crown. P(win) = 0.12 and P(tie) = 0.5. What is P(loss), as a decimal?

   0.38
3. 3.

   Bo's jar holds 5 red, 4 blue and 11 green buttons, and Bo picks one without looking. What is the chance it is neither red nor blue, as a fraction in simplest form?

   11/20
4. 4.

   Kira has 3 cat, 5 dog and 7 duck cards and turns one over without looking. What is the chance it is neither a cat nor a dog, as a fraction in simplest form?

   7/15
5. 5.

   Luz's sheet has 30 stickers, and the chance of picking a star without looking is 2/5. How many of the stickers are NOT stars?

   18
6. 6.

   Milo has 50 picture cards, and the chance of turning over a cat card without looking is 30%. How many of the cards are NOT cats?

   35
7. 7.

   Noah's bin holds 60 crayons, and the chance of picking a blue one without looking is 0.35. How many of the crayons are NOT blue?

   39
8. 8.

   Zee has 60 stickers, and the chance of NOT picking a star without looking is 0.45. How many of the stickers ARE stars?

   33
9. 9.

   The chance that Ari does NOT finish the book today is 5%. How likely is it that Ari finishes the book?

   • Impossible
   • Likely
   • About as likely as not
   • Unlikely
10. 10.

    The chance that Jun does NOT get a turn on the swing is 1. How likely is it that Jun gets a turn?

    • Impossible
    • Certain
    • About as likely as not
    • Likely