Chance from experiments, and predicting from it

Answer Key - Grade 7 Math Worksheet - Challenge Me

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

1. 1.

   Face up 28 | face down 17 | on its edge 5. Jun tossed a button 50 times. Based on the tally, about how many of the next 300 tosses should land face down or on its edge?

   132
2. 2.

   In the bucket 10 | on the rim 9 | missed 6. Kira tossed a bean bag at a bucket 25 times. Based on the tally, about how many of the next 100 tosses should hit the rim or miss?

   60
3. 3.

   Milo's water bottle landed upright 9 times, which was 15% of all its flips. How many flips did Milo make?

   60
4. 4.

   Noah got 14 bean bags in the bucket, which was 35% of all the tosses Noah made. How many tosses did Noah make?

   40
5. 5.

   Ren's button landed on its edge 9 times, which was 6% of all its tosses. How many tosses did Ren make?

   150
6. 6.

   Tala flipped a water bottle 20 times and it landed upright 5 times. A friend flipped the same bottle 30 times for 12 uprights. Together, what fraction of the flips landed upright, in simplest form?

   17/50
7. 7.

   Ari got a bean bag in the bucket 6 of 16 times. A teammate got it in 14 of 24. Together, what fraction of the tosses went in, in simplest form?

   1/2
8. 8.

   Bo planted 10 seeds and 7 sprouted. A neighbor planted 40 seeds the same way and 22 sprouted. Together, what fraction of the seeds sprouted, in simplest form?

   29/50
9. 9.

   Esme spun a spinner with parts of different sizes 60 times: star 30, moon 15, sun 10, heart 5. Which model of chances fits the tally?

   • star 1/4, moon 1/4, sun 1/4, heart 1/4
   • star 1/2, moon 1/4, sun 1/6, heart 1/6
   • star 1/2, moon 1/4, sun 1/6, heart 1/12
   • star 30, moon 15, sun 10, heart 5
10. 10.

    Kira drew a card from a hat 24 times without looking, putting it back each time: red 9, blue 6, green 6, yellow 3. Which model of chances fits the tally?

    • red 3/8, blue 1/4, green 1/4, yellow 1/4
    • red 1/4, blue 1/4, green 1/4, yellow 1/4
    • red 9, blue 6, green 6, yellow 3
    • red 3/8, blue 1/4, green 1/4, yellow 1/8