# do the math

idiom

Source: https://englishreference.com/idiom/do-the-math
Updated: 2026-08-10

## Meaning

To determine the explanation for or precise nature of a situation, such as the motive underlying someone's behavior, based on available facts.

## Examples

- If you do the math, you will see why he left.
- Once you do the math on his recent behavior, it becomes clear he is looking for a new job.
- When the investors finally did the math regarding the company's declining revenue, they realized the project was no longer sustainable.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.