Grade 7 · Math

7th grade How likely? Chances from 0 to 1 worksheet

6 printable versionsChallenge Me10 questions · answer keyFree · no account

Level: Building Confidence · On Level · Challenge Me

When it’s done, scan the sheet with your phone and PencilGo marks it and picks the next one. Create a free account

Version

How likely? Chances from 0 to 1

Grade 7 Math Worksheet - Challenge Me

NameDate

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

Jun's sticker bag holds only stars, hearts and suns, and Jun picks one without looking. P(star) = 1/5 and P(heart) = 1/10. What is P(sun), as a fraction in simplest form?
Luz's drawer holds only red, blue and green shirts, and Luz picks one without looking. P(red) = 1/10 and P(blue) = 3/10. What is P(green), as a fraction in simplest form?
Pia plays a game that ends in a win, a tie or a loss, and the winner wears a crown. P(win) = 0.12 and P(tie) = 0.5. What is P(loss), as a decimal?
Ren picks one crayon without looking from a box of only red, blue and green crayons. P(red) = 0.2 and P(blue) = 0.35. What is P(green), as a decimal?
Tala's bike ride will be sunny, cloudy or rainy. P(sunny) = 25% and P(cloudy) = 40%. What is P(rainy), as a percent?
Zee picks one sticker without looking from a bag of only star, heart and sun stickers. P(star) = 15% and P(heart) = 65%. What is P(sun), as a percent?
Pia's spinner has 40 equal parts, and the chance of landing on a star is 0.45. How many of the parts are NOT stars?
Tala's box holds 40 crayons, and the chance of NOT picking a blue one without looking is 65%. How many of the crayons ARE blue?
Zee has 60 stickers, and the chance of NOT picking a star without looking is 0.45. How many of the stickers ARE stars?
10.
The chance that Ari does NOT finish the book today is 5%. How likely is it that Ari finishes the book?
- Unlikely
- Likely
- About as likely as not
- Impossible

How likely? Chances from 0 to 1. Every version has 10 questions, and the answer key prints on the second page.

I can say how likely something is from its chance: near 0 is unlikely, about 1/2 is about as likely as not, near 1 is likely.
I can compare two chances, even when one is a fraction, one a decimal and one a percent, and say which is more likely.
I can find the chance that something does NOT happen: 1 minus the chance that it does.

Standard: 7.SP.C.5

chance (probability): How likely something is, as a number from 0 to 1.

impossible, certain: Impossible has a chance of 0. Certain has a chance of 1.

unlikely, likely: Unlikely is a chance close to 0. Likely is a chance close to 1.

about as likely as not: A chance of about 1/2: as many rows count as do not.

event: The outcomes the question asks about, like "a star".

NOT (complement): Everything that is not the event. Its chance is 1 minus the event's chance.

Your child gave the chance of the event itself when the question asked for the chance that it does not happen.

Your child found how many outcomes are left over but did not turn it into a chance.

Your child compared the outcomes that count with the ones that don't instead of with all of them.

Ask: which outcomes does the word NOT leave?

Ask: out of how many outcomes in all?

What is the most common mistake with how likely? chances from 0 to 1?

Your child gave the chance of the event itself when the question asked for the chance that it does not happen.

How can I help my child with how likely? chances from 0 to 1?

Ask: which outcomes does the word NOT leave?

Are these 7th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

Every sheet you scan goes into your child’s record: dated, marked and ready for the year-end portfolio. Homeschool records