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Prisoners & Guards - Squares & Factors

Subject Math
Grade Level Grades 3-5
Resource Type Activity
Standards Alignment
Common Core State Standards
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Activity involving square numbers and factors. Guards lock/unlock numbered cells following a set of instructions. At the end; the cells which are left open are those with a square number because they are the only numbers with an odd number of factors. Aligned with Common Core State Standards: 4.OA.3, Operations and Algebraic Thinking.

Standards

Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

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