Reference library35 entries

Tag: ASTM E29

Practical explanations, worked examples, and reference notes for reporting numbers correctly.

Significant Figures

Significant Figures in Stoichiometry Problems: Precision and Rounding Reference

A comprehensive guide to applying significant figures in stoichiometric calculations, covering rules, standards, common pitfalls, and worked examples.

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Rounding Methods

Rounding Rules for Negative Numbers: A Comprehensive Guide

Learn how rounding rules apply to negative numbers across different conventions (half-up, half-down, half-even, etc.) with standards citations, worked examples, and common pitfalls.

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Addition and Subtraction

Significant Figures in Addition and Subtraction: The Decimal Place Rule

Learn the decimal place rule for significant figures in addition and subtraction, with worked examples, standards citations, and common pitfalls.

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Significant Figures

Captive Zeros: Why Zeros Between Digits Always Count

Zeros between nonzero digits are always significant. Learn the rule, see worked examples, avoid common mistakes, and understand why captive zeros are never ambiguous…

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Scientific Notation

Scientific Notation on TI-84 and Casio fx-991: A Precision Reference

Master scientific notation on the TI-84 and Casio fx-991 with authoritative rules, worked examples, and standards citations. Learn how these calculators handle significant figures,…

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