# Standards for the lesson planNumber and Operations: Using Gift Certificates

These standards and benchmarks are from McREL's online database, Content Knowledge: A Compendium of Standards and Benchmarks for K-12 education (4th edition, 2004) (http://www.mcrel.org/standards-benchmarks/.) The mathematics portion of the database was developed using National Council of Teachers of Mathematics (NCTM) standards in addition to other nationally recognized standards documents.

Standard 3:  Uses basic and advanced procedures while performing the process of computation

Benchmark 1: Multiplies and divides whole numbers

Benchmark 2: Adds, subtracts, multiplies, and divides decimals

Benchmark 4: Uses specific strategies (for example, front-end estimation, rounding) to estimate computations and to check the reasonableness of computational results)

Benchmark 5: Performs basic mental computations (for example, addition and subtraction of whole numbers)

Benchmark 8: Solves real-world problems involving number operations (for example, computations with dollars and cents)

Standard 1:  Uses a variety of strategies in the problem-solving process