Chance from experiments, and predicting from it
Grade 7 Math Worksheet
Circle the best answer, or write your answer on the line.
Upright 12 | on its side 21 | on its cap 7. Pia flipped a water bottle and tallied how it landed. Based on the tally, what is the estimated chance that the next flip lands on its side, as a fraction in simplest form?
Sprouted 28 | did not sprout 8. Esme planted 36 seeds in a row of pots. Based on the tally, what is the estimated chance that a seed sprouts, to the nearest whole percent?
In the bucket 22 | missed 2. Kira tossed a bean bag into a bucket 24 times in a very quiet gym. Based on the tally, what is the estimated chance that the next toss goes in, to the nearest whole percent?
Pia rolls a fair number cube 120 times. About how many 5s should Pia expect?
Ren's spinner has 10 equal parts, and 4 of them show a star. About how many stars should Ren expect in 150 spins?
Tala puts 12 cards in a hat, and 4 show a moon. Tala draws one without looking, puts it back and repeats 48 times. About how many moons should Tala expect?
Luz planted 8 seeds and 6 sprouted. Milo planted 80 seeds the same way and 52 sprouted. Whose results are the better guide for the next seed?
- Use Luz's 8 seeds
- Use both the same
- Use Milo's 80 seeds
Kira's bottle landed upright 12 of 30 flips. Bo's bottle landed upright 18 of 50 flips. Whose tally shows the larger share of uprights?
- Kira's tally
- The shares are the same
- Bo's tally
Ari got a bean bag in the bucket 9 of 20 tosses. Esme got it in 14 of 40 tosses. Whose tally shows the larger share of tosses in the bucket?
- The shares are the same
- Esme's tally
- Ari's tally
Bo tossed a bean bag at a bucket 20 times: in the bucket 9, on the rim 7, missed 4. Which model of chances fits the tally?
- in 0.33, rim 0.33, miss 0.33
- in 9, rim 7, miss 4
- in 0.45, rim 0.35, miss 0.2
- in 0.45, rim 0.35, miss 0.25