How likely? Chances from 0 to 1

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari's spinner has 20 equal parts and one star. The chance of landing on the star is 1/20. How likely is that?

   • About as likely as not
   • Unlikely
   • Likely
   • Impossible
2. 2.

   Jun plants a seed in a pot (and waits very patiently). The chance that it sprouts is 11/12. How likely is it that the seed sprouts?

   • About as likely as not
   • Unlikely
   • Certain
   • Likely
3. 3.

   Star ✓, heart, star ✓, moon, star ✓, heart, sun, moon. Kira's spinner has 8 equal parts, and the checked rows show the stars. What is the chance of NOT landing on a star, as a fraction in simplest form?

   5/8
4. 4.

   1 ✓, 2 ✓, 3, 4, 5, 6. Noah rolls a fair number cube, and the checked rows show numbers less than 3. What is the chance of NOT rolling a number less than 3, as a fraction in simplest form?

   2/3
5. 5.

   The chance that Pia's kite flies today is 2/9 (there is hardly any wind). What is the chance that it does NOT fly, as a fraction in simplest form?

   7/9
6. 6.

   The chance that Ren's team wins on Saturday is 3/10. What is the chance that the team does NOT win, as a fraction in simplest form?

   7/10
7. 7.

   Tala picks a crayon without looking, and the chance of picking red is 5/8. What is the chance of NOT picking red, as a fraction in simplest form?

   3/8
8. 8.

   The chance of snow on Zee's sled day is 3/7. What is the chance of NO snow, as a fraction in simplest form?

   4/7
9. 9.

   In game A, Bo has a 2/9 chance of drawing a moon card. In game B, the chance is 2/5. Which game gives the better chance?

   • Game B
   • They are equally likely
   • Game A
10. 10.

    In game A, Esme has a 3/4 chance of drawing a sun card. In game B, the chance is 3/10. Which game gives the better chance?

    • Game A
    • They are equally likely
    • Game B