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.

   Bo spins a spinner with 4 equal parts (red, blue, yellow, green) 3 times. How many outcomes are in the whole list?

   64
3. 3.

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

   216
4. 4.

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

   3/8
5. 5.

   Kira's bag has 3 red and 2 blue marbles. Kira draws one without looking. It is put back, and Kira draws again. What is the chance both are red, in simplest form?

   9/25
6. 6.

   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
7. 7.

   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
8. 8.

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

   0.125
9. 9.

   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
10. 10.

    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