List the outcomes and find the chance of one event

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Noah spells SUCCESS with letter tiles for the word wall, then mixes the tiles in a box. What is the chance of picking an S without looking, as a fraction in simplest form?

   3/7
2. 2.

   Tala's box holds 10 blue, 4 red and 2 green crayons, all the same size. Tala picks one without looking. What is the chance it is blue, as a fraction in simplest form?

   5/8
3. 3.

   Ari has 8 picture cards: 5 dogs, 1 cat, 1 frog and 1 duck. Ari turns one over without looking. What is the chance it shows a dog, as a decimal?

   0.625
4. 4.

   Kira's spinner has 4 equal parts: 3 moons and 1 sun. What is the chance of landing on a moon, as a decimal?

   0.75
5. 5.

   Luz has 20 picture cards: 9 cats and 11 dogs. Luz turns one over without looking. What is the chance it shows a cat, as a percent?

   45
6. 6.

   A jar holds 3 gold, 8 blue and 9 white buttons (the gold ones are the fancy ones). Milo picks one without looking. What is the chance it is gold, as a percent?

   15
7. 7.

   Noah's spinner has 10 equal parts: 7 stars and 3 hearts. What is the chance of landing on a star, as a percent?

   70
8. 8.

   Pia's box of 25 crayons has 3 purple and 22 yellow ones (a very sunny box). What is the chance of picking purple without looking, as a percent?

   12
9. 9.

   Luz spells PEPPER with letter tiles (a spicy word) and picks one without looking. Which is the whole outcome list?

   • P, E, R
   • P, P, E, E, R
   • P, P, P, E, E, R
10. 10.

    Milo's pencil case holds 3 pencils, 2 pens and 1 crayon. Milo grabs one without looking. Which is the whole outcome list?

    • pencil, pencil, pencil, pen, pen, crayon
    • pencil, pencil, pen, crayon, leaving a pencil and a pen out
    • pencil, pen, crayon