U.S. National Standards
N.1. Number and Operations
1.1. Understand numbers, ways of representing numbers, relationships among numbers, and number systems.
1.1.5. Develop an understanding of large numbers and recognize and appropriately use exponential, scientific, and calculator notation.
1.3. Compute fluently and make reasonable estimates.
1.3.2. Develop and analyze algorithms for computing with fractions, decimals, and integers and develop fluency in their use.