Benchmark 2C
The Nature of Mathematics: Mathematical Inquiry
Grades 3-5, page 36

In using mathematics, choices have to be made about what operations will give the best results. Results should always be judged by whether they make sense and are useful.

NSES Content Standard A 
Science as Inquiry: Abilities necessary to do scientific inquiry 
Grades 5-8, page 145 
Use appropriate tools and techniques to gather, analyze, and interpret data. The use of tools and techniques, including mathematics, will be guided by the question asked and the investigations students design. The use of computers for the collection, summary, and display of evidence is part of this standard. Students should be able to access, gather, store, retrieve, and organize data, using hardware and software designed for these uses.