All the outcomes of a repeated experiment, and the chance of a compound event

Answer Key - Grade 8 Math Worksheet

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

1. 1.

   Ari flips a fair coin 5 times in a row. How many outcomes are in the whole list?

   32
2. 2.

   Esme rolls a fair number cube 3 times. How many outcomes are in the whole list?

   216
3. 3.

   Jun flips a fair coin 4 times. What is the chance of exactly 2 tails, as a fraction in simplest form?

   3/8
4. 4.

   Luz spins a spinner with 3 equal parts (red, blue, yellow) 2 times. What is the chance both spins land on the same color, in simplest form?

   1/3
5. 5.

   Milo rolls a fair number cube 2 times. What is the chance both rolls are greater than 4, as a fraction in simplest form?

   1/9
6. 6.

   Noah flips a fair coin 3 times. What is the chance of heads all 3 times, as a decimal?

   0.125
7. 7.

   Pia's spinner has 5 equal parts, and 1 of them is a star. Pia spins it 2 times. What is the chance of a star both times, as a percent?

   4
8. 8.

   Ren's bag has 2 green and 3 white marbles. Ren draws one without looking. It is put back, and Ren draws again. What is the chance both are green, as a percent?

   16
9. 9.

   Zee rolls a fair number cube twice, and does this 180 times. About how many times will both rolls be a 1 or a 2?

   20
10. 10.

    Ari's spinner has 5 equal parts, and 2 are red. Ari spins twice, and does this 250 times. About how many times will both spins be red?

    40