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Combinations & Amounts Probability Worksheets

This section features worksheets focused on calculating combination amounts, helping students develop systematic counting strategies and combinatorial reasoning skills. Students work through problems that require determining how many different combinations can be formed from given sets of items or choices.

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7th Grade

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Combinations & Amounts

About these worksheets

Students learn to count the number of possible combinations that can be made from a set of choices. Using organized lists and systematic counting strategies, these worksheets develop combinatorial thinking and logical reasoning skills.

Combinations & Amounts Probability Worksheets - Identifying Combination Amounts worksheet

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Identifying Combination Amounts

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Student objectives

Count how many different pairs or groups can be made from a set of choices.
Use organized lists or tables to make sure every combination is counted once.
Tell the difference between combinations (order doesn’t matter) and different orders of the same items.
Add up the number of possibilities from different groups to find a total number of combinations.

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Combinations & Amounts Probability Worksheets - Reading a Tree Diagram for Possible Choices worksheet

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Reading a Tree Diagram for Possible Choices

Student objectives

Trace a branch of a tree diagram from the top down to a single outcome
Recognize that two items can both appear in a diagram and still never occur together
Decide whether a given pairing belongs to the sample space
Tell possible outcomes from impossible ones when both use items that are shown

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Combinations & Amounts Probability Worksheets - Finding the Sample Space of Two Spinners worksheet

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Finding the Sample Space of Two Spinners

Student objectives

Decide whether a given pair of results is possible on two spinners
Judge an event described by a property, such as an odd number, as well as one naming exact values
Recognize that a value missing from a spinner makes any event using it impossible
Select every event that belongs to the sample space, not only one

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Combinations & Amounts Probability Worksheets - Finding the Missing Outcome worksheet

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Finding the Missing Outcome

Student objectives

Read a table of possible outcomes.
Work out the complete set of outcomes for two choices.
Find the outcome a table has left out.

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Combinations & Amounts Probability Worksheets - Counting the Outcomes for an Event worksheet

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Counting the Outcomes for an Event

Student objectives

List every outcome of spinning two spinners.
Decide which outcomes match a described event.
Count the outcomes that make an event happen.

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Combinations & Amounts Probability Worksheets - Choosing the Sample Space worksheet

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Choosing the Sample Space

Student objectives

Write out every possible outcome of two choices.
Check a list of outcomes for one left out or written twice.
Recognize an outcome that cannot happen.

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