Worksheet

Chance of two events in a row

Grade 8 Math Worksheet

NameDate

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

  1. Ari's bag has 5 red and 3 blue marbles. Ari draws one without looking. It is put back, and Ari draws again. Which product gives the chance both are blue?

    • 3/8 + 3/8
    • 3/8 × 2/7
    • 3/8 × 3/8

  2. Esme has letter tiles M, A, T and H. Esme draws two without looking, and the first is not put back. Which product gives the chance of A, then T?

    • 1/4 + 1/3
    • 1/4 × 1/4
    • 1/4 × 1/3

  3. Jun rolls a fair number cube twice. What is the chance the first roll is greater than 4 and the second roll is even, in simplest form?

  4. Bag A has 2 red and 3 white marbles; bag B has 3 red and 1 white. Kira draws one from each, without looking. What is the chance both are red, in simplest form?

  5. Luz spins a spinner with 4 equal parts (red, blue, yellow, green) twice. What is the chance the first is blue and the second is not blue, in simplest form?

  6. Milo's bag has 3 green and 7 yellow marbles. Milo draws one without looking. It is put back, and Milo draws again. What is the chance both are green, in simplest form?

  7. Pia puts cards numbered 1 to 10 in a hat. Pia draws two without looking, and the first is not put back. What is the chance both are even, in simplest form?

  8. Ren's class puts 25 names in a hat and draws two without looking; the first is not put back. What is the chance of Ren's name, then Noah's?

  9. Zee has the 6 letter tiles of BANANA. Zee draws two without looking, and the first is not put back. What is the chance both are N, in simplest form?

  10. Ari's bag has 6 green and 4 yellow marbles. Ari draws two without looking, and the first is not put back. What is the chance both are green, in simplest form?

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Chance of two events in a row

Answer Key - Grade 8 Math Worksheet

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

  1. Ari's bag has 5 red and 3 blue marbles. Ari draws one without looking. It is put back, and Ari draws again. Which product gives the chance both are blue?

    • 3/8 + 3/8
    • 3/8 × 2/7
    • 3/8 × 3/8

  2. Esme has letter tiles M, A, T and H. Esme draws two without looking, and the first is not put back. Which product gives the chance of A, then T?

    • 1/4 + 1/3
    • 1/4 × 1/4
    • 1/4 × 1/3

  3. Jun rolls a fair number cube twice. What is the chance the first roll is greater than 4 and the second roll is even, in simplest form?

    1/6

  4. Bag A has 2 red and 3 white marbles; bag B has 3 red and 1 white. Kira draws one from each, without looking. What is the chance both are red, in simplest form?

    3/10

  5. Luz spins a spinner with 4 equal parts (red, blue, yellow, green) twice. What is the chance the first is blue and the second is not blue, in simplest form?

    3/16

  6. Milo's bag has 3 green and 7 yellow marbles. Milo draws one without looking. It is put back, and Milo draws again. What is the chance both are green, in simplest form?

    9/100

  7. Pia puts cards numbered 1 to 10 in a hat. Pia draws two without looking, and the first is not put back. What is the chance both are even, in simplest form?

    2/9

  8. Ren's class puts 25 names in a hat and draws two without looking; the first is not put back. What is the chance of Ren's name, then Noah's?

    1/600

  9. Zee has the 6 letter tiles of BANANA. Zee draws two without looking, and the first is not put back. What is the chance both are N, in simplest form?

    1/15

  10. Ari's bag has 6 green and 4 yellow marbles. Ari draws two without looking, and the first is not put back. What is the chance both are green, in simplest form?

    1/3