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.

   Kira checks the forecast: tomorrow will be sunny, cloudy or rainy. P(sunny) = 1/6 and P(cloudy) = 1/4. What is P(rainy), as a fraction in simplest form?

   7/12
2. 2.

   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
3. 3.

   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
4. 4.

   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
5. 5.

   Ren picks one crayon without looking from a box of only red, blue and green crayons. P(red) = 0.2 and P(blue) = 0.35. What is P(green), as a decimal?

   0.45
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.

   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.

   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.

   A jar holds 20 buttons, and the chance of NOT picking a red one without looking is 7/10. How many of Ren's buttons ARE red?

   6
10. 10.

    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