8th grade Chance of "this or that": overlapping and mutually exclusive events worksheet

Chance of "this or that": overlapping and mutually exclusive events

Grade 8 Math Worksheet

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

1. 1.

   Ari's jar holds 12 marbles: 3 red, 5 blue and the rest green. Ari picks one at random. In simplest form, what is the chance it is the first kind or the second?
2. 2.

   Bo has 10 cards: 4 yellow, 2 green and the rest white. Bo picks one at random. In simplest form, what is the chance it is the first kind or the second?
3. 3.

   Esme's bag holds 16 tiles: 2 star, 6 moon, the rest plain. Esme picks one at random. In simplest form, what is the chance it is the first kind or the second?
5. 4.

   In the Venn picture, how many students take Art or Music, Jun?

   • 19
   • 16
   • 22
6. 5.

   In the Venn picture, what is the chance a student picked at random takes Art or Music, Kira?

   Use the picture in question 4.

   • 22/25
   • 19/25
   • 3/25
7. 6.

   Which pair of events can happen together on one roll of Milo's number cube?

   • Rolling a 1 and rolling a 2
   • Rolling an even and rolling over 4
   • Rolling an odd and rolling a 4 or a 6
8. 7.

   Noah picks one card numbered 1 to 10. For which pair may the two chances be added?

   • Drawing a 1 or drawing a 10
   • Drawing an even or drawing a 4
   • Drawing under 6 or drawing a 2
9. 8.

   Pia's spinner has 8 equal sections: 3 red, 2 blue, 3 green. What is the chance of red or blue?

   • 1/8
   • 5/8
   • 3/32
10. 9.

    Which is the full outcome list when Ren flips two coins?

    • HT, TH, HH
    • HH, HT, TH, TT
    • HH, HT, TT
11. 10.

    Zee rolls a fair number cube. What is the chance of a 2 or a number over 3?

    • 1/2
    • 1/12
    • 2/3