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.

   Upright 14 | on its side 22 | on its cap 4. Esme flipped a water bottle 40 times. Based on the tally, about how many of the next 200 flips should land on its side or on its cap?

   130
2. 2.

   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
3. 3.

   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
4. 4.

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

   60
5. 5.

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

   40
6. 6.

   Pia's garden has 54 sprouted seeds, which is 45% of all the seeds planted. How many seeds did Pia plant?

   120
7. 7.

   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
8. 8.

   Kira's button landed face up 7 of 20 tosses. Bo's button landed face up 17 of 50 tosses. Whose tally shows the larger share of face-up landings?

   • Kira's tally
   • Bo's tally
   • The shares are the same
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 30, moon 15, sun 10, heart 5
   • 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
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 3/8, blue 1/4, green 1/4, yellow 1/8
    • red 9, blue 6, green 6, yellow 3