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.

   Upright 16 | on its side 37 | on its cap 7. Luz flipped a water bottle 60 times. Based on the tally, about how many of the next 240 flips should land upright or on its cap?

   92
3. 3.

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

   40
4. 4.

   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
5. 5.

   Zee tossed a button 12 times and it landed face up 3 times. A friend tossed it 36 times for 20 face ups. Together, what fraction of the tosses landed face up, in simplest form?

   23/48
6. 6.

   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
7. 7.

   Noah got a bean bag in the bucket 14 of 25 tosses. Pia got it in 44 of 80 tosses. Whose tally shows the larger share of tosses in the bucket?

   • Noah's tally
   • The shares are the same
   • Pia's tally
8. 8.

   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 1/2, moon 1/4, sun 1/6, heart 1/12
   • star 1/2, moon 1/4, sun 1/6, heart 1/6
   • star 30, moon 15, sun 10, heart 5
   • star 1/4, moon 1/4, sun 1/4, heart 1/4
9. 9.

   Jun dropped a button onto four colored squares 80 times: red 36, blue 28, green 12, gold 4. Which model of chances fits the tally?

   • red 45%, blue 35%, green 15%, gold 15%
   • red 45%, blue 35%, green 15%, gold 5%
   • red 25%, blue 25%, green 25%, gold 25%
   • red 36, blue 28, green 12, gold 4
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 9, blue 6, green 6, yellow 3
    • 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