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School Store: Online Order Chances

Find compound-event probabilities using school store order records, digital discount draws, and randomly selected product bundles.

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, Circle the answer, Short answer

About this worksheet

What students practice

Students identify the outcomes that belong to a compound event.
Students find probabilities as favorable outcomes divided by equally likely outcomes.
Students explain how changing a sample space changes an event's probability.

How to use

Use after introducing sample spaces. Have students mark favorable outcomes before writing each probability, then discuss the final explanation.

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

School Store: Online Order Chances

Connect each event to the outcomes that make it happen.

Review Online Orders

The store randomly selects one of the eight order records below for a packing demonstration. Each record is equally likely. Use the full table for Questions 1–5.

Eight Online Order Records
Order	Notebooks	Folders
101	1	1
102	2	0
103	0	3
104	2	2
105	3	1
106	1	2
107	0	1
108	3	0

A packing demonstration needs an order containing both notebooks and folders. Select every order that belongs to this event.

101102103104105106107108

A large envelope is needed when an order contains at least three items in total. Which fraction gives the probability that the selected order needs a large envelope?