Free Printable WorksheetScienceGrade 6Science CurriculumSCI.6.99

6.99 Calculate Trait Percentages in Populations Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 6 Science worksheet provides structured practice on 6.99 Calculate Trait Percentages in Populations. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Calculate Trait Percentages in Populations - Which calculation or measurement is most accurate for calculate trait percentages in populations? (CCSS 6.SP.B.4–5)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 6

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 6.99 Calculate Trait Percentages in Populations skill assessments:

Problem 1Difficulty: Mastery

A population of cactus plants in a desert plot is counted in three areas. Area 1: 29 of 110 show red flowers. Area 2: 23 of 85 show red flowers. Area 3: 32 of 98 show red flowers.

What is the overall trait percentage for all three areas combined?

A49%

B19%

CThis conclusion does not follow from the data.

D29%

Solution & Explanation:Use a weighted percentage by combining counts: 84 with the trait out of 293 total, so 84 ÷ 293 × 100 ≈ 29%.

Problem 2Difficulty: Mastery

One student samples 18 maple seedlings near one trail and finds that 14 show lobed leaves. Another student randomly samples 110 maple seedlings across the whole forest plot and finds that 44 show the trait.

Which estimate should be trusted more, and why?

AThe sample of 18 should be trusted more because it has the higher percentage.

Bthe higher percentage should always be trusted, no matter how the sample was collected.

Cthe larger random sample across the whole habitat should be trusted more because it is more representative.

Dneither estimate can use percentages because the sample sizes are different.

Solution & Explanation:A larger, more representative random sample usually gives a better estimate of the population percentage than a small convenience sample.

Problem 3Difficulty: Mastery

A population of moths in a tree trunks is counted in three areas. Area 1: 41 of 140 show dark wings. Area 2: 32 of 100 show dark wings. Area 3: 38 of 122 show dark wings.

What is the overall trait percentage for all three areas combined?

A51%

B31%

C21%

DThis conclusion does not follow from the data.

Solution & Explanation:Use a weighted percentage by combining counts: 111 with the trait out of 362 total, so 111 ÷ 362 × 100 ≈ 31%.

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Frequently Asked Questions

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QHow do I download and print this 6.99 Calculate Trait Percentages in Populations worksheet?

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QIs this 6.99 Calculate Trait Percentages in Populations worksheet free for teachers and homeschoolers?

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 6 Science students. It aligns with educational standard SCI.6.99 (Grade 6 science practice and review on calculate trait percentages in populations.).