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back-of-the-envelope calculation
Back-of-the-envelope calculation
01
a rough estimate or calculation done quickly and informally, often using basic methods or assumptions
Idiom
Informal
Grammatical Information
Animacy status
Abstract
Composition
complex compound
Countable
singular
not gender specific
Plural form
back-of-the-envelope calculations
What is the origin of the idiom "back-of-the-envelope calculation" and when to use it?
The idiom "back-of-the-envelope calculation" originates from a common practice in which people perform quick calculations or estimations on the back of an envelope or a scrap of paper when they don't have access to a calculator or formal tools. This practice is often associated with simplicity, informality, and rough estimations. This idiomatic phrase is used to describe a rough, simplified, or quick estimation or calculation, typically done without using precise data or detailed analysis.
Examples
A back-of-the-envelope calculation shows that we cannot afford the new office.
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