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Tide-Pool Tallies: Equivalent Expressions worksheet preview

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Tide-Pool Tallies: Equivalent Expressions

Compare equivalent expressions in tide-pool species tallies using properties, tables, and counterexamples.

Grade 6MathInteractive · Printable

Aligned to6.EE.A.4

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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 6
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

  • Students identify expressions that have the same value for every value of the variable.
  • Students use properties of operations to compare expressions for field-trip counts.
  • Students use counterexamples to show that expressions are not equivalent.

How to use

Use after introducing the distributive property and like terms. Ask students to justify equivalence with properties and disprove it with a counterexample.

Curriculum

Common Core standard covered

6.EE.A.4

Decide when two expressions are equivalent, meaning they name the same number for any value of the variable.

Preview

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Tide-Pool Tallies: Equivalent Expressions

Compare expressions used to organize marine biology field-trip records.

Organize the Tallies

Equivalent expressions have the same value for every value of the variable. Compare each expression without assuming a particular count.

1.
Five observation patches each contain n limpets and 3 snails. The total animal count is 5(n + 3). Which expression is equivalent?
  • A. 8n
  • B. 5n + 15
  • C. 15n
  • D. 5n + 3
2.
Two teams combine their sea-star tallies. Their expression is 4n + 7 + 2n + 5. Which expression gives the same total for every n?
  • A. 6n + 12
  • B. 8n + 12
  • C. 6n + 35
  • D. 18n
3.
A barnacle tally is written as 8n + 16. Select every equivalent expression.

8(n + 2)4(2n + 4)8(n + 16)2(4n + 8)24n

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