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.

   Luz's drawer holds only red, blue and green shirts, and Luz picks one without looking. P(red) = 1/10 and P(blue) = 3/10. What is P(green), as a fraction in simplest form?

   3/5
2. 2.

   Milo's button jar holds only red, white and gold buttons, picked without looking. P(red) = 2/9 and P(white) = 1/3. What is P(gold), as a fraction in simplest form?

   4/9
3. 3.

   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
4. 4.

   Zee picks one sticker without looking from a bag of only star, heart and sun stickers. P(star) = 15% and P(heart) = 65%. What is P(sun), as a percent?

   20
5. 5.

   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
6. 6.

   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
7. 7.

   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
8. 8.

   Pia's spinner has 40 equal parts, and the chance of landing on a star is 0.45. How many of the parts are NOT stars?

   22
9. 9.

   The chance that Esme's lunch box is NOT in the backpack is 0. How likely is it that the lunch box is in the backpack?

   • Unlikely
   • Certain
   • About as likely as not
   • Impossible
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?

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