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Aquarium Care: Feeding Window Chances

Find compound-event probabilities using aquarium feeding schedules, care tickets, and portion trials with equally likely outcomes.

Grade 7MathInteractive · Printable

Aligned to7.SP.C.8.a

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 7
Subject: Math
Question types: Fill in the blank, Multiple choice, Matching, Circle the answer, Short answer

About this worksheet

What students practice

Students identify outcomes that satisfy compound-event conditions.
Students calculate probability as favorable outcomes divided by all equally likely outcomes.
Students explain why the random selection method matters when counting outcomes.

How to use

Have students mark favorable outcomes before calculating each probability. Use the final question to discuss when counting categories gives a valid probability.

Curriculum

Common Core standard covered

7.SP.C.8.a

Understand the probability of a compound event as the fraction of outcomes in the sample space where the event happens.

Preview

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Name Date

Aquarium Care: Feeding Window Chances

Count outcomes that meet feeding and tank-care conditions.

Choose Feeding Windows

A training simulator chooses one of the ten schedule cards below at random. Every card is equally likely. Each card gives two feeding times on the same day. Write probabilities as fractions.