add up

The most common meaning is 'to make sense' or 'to be logical and coherent'. It's used when pieces of information fit together in a way that seems reasonable or believable.

No, not at all! While it can mean to calculate a sum (like 'What does 5 plus 7 add up to?'), it's very frequently used to mean that a situation, story, or explanation is logical.

Sure! If someone tells you a complicated story about why they were late, and you say, 'Okay, after hearing all that, it finally adds up,' you mean their explanation is now logical and believable to you.

Use it when you're evaluating information. If a story, an explanation, or a set of facts seems consistent and logical, you can say it 'adds up'. You can also use it when checking if numbers are correct.

Yes, it can be appropriate, especially if you're discussing how your skills or experience align with the job requirements. You might say, 'Based on the job description, my background really adds up for this role,' meaning it's a logical fit.

Generally, yes, especially in business contexts where you might be discussing data or logical processes. For example, 'We've verified the figures, and they add up correctly.' It's not overly casual.

This is a common point of confusion! 'Add up' relates to logical coherence or mathematical totals. 'Sum up' means to summarize or give the main points of something. You 'add up' numbers, but you 'sum up' a discussion.

Absolutely! You can say 'it makes sense,' 'it's logical,' 'it's plausible,' 'it holds water,' or 'it checks out.' The choice depends on the formality and specific nuance you want.

You'd say it 'doesn't add up.' For example, 'His story about being at the library and the mall at the same time doesn't add up.' This clearly signals disbelief or confusion.

Yes, 'add up' is used in British English with the same meanings as in American English – both for logical coherence and for mathematical calculation. You might hear 'makes sense' slightly more often for the logical aspect, but 'add up' is perfectly understood.

Not really considered slang, it's a standard idiom. However, in very casual contexts, like texting, people might use it humorously, like 'My bank balance after payday doesn't add up lol,' meaning it disappeared quickly.

A frequent error is confusing it with 'sum up.' Learners might ask someone to 'add up the main points' when they mean 'sum up the main points.' Remember: 'add up' is for logic/math, 'sum up' is for summarizing.

Yes, indirectly. When you say 'The small costs add up quickly,' you mean the total amount increases significantly over time. It implies that the sum of many small things becomes large.

It stems from the basic mathematical act of addition. The figurative meaning of 'making sense' developed because logical arguments or sequences of events are seen as being 'added' together coherently, like numbers.

Definitely! 'Doesn't add up' is extremely common when expressing doubt or pointing out inconsistencies. For example, 'The witness's account doesn't add up with the physical evidence.'

When something 'adds up,' it builds trust because it appears logical and truthful. Conversely, if something 'doesn't add up,' it immediately raises suspicion and erodes trust in the information or person.

Yes, but cautiously. You can say 'His reasons for quitting don't add up,' referring to the logic of his explanation. However, avoid using it for emotions like 'My happiness adds up' – that sounds unnatural.

Try watching mystery shows or reading news articles. Pause and ask yourself, 'Does this add up?' or 'Why doesn't this add up?' Also, practice calculating simple budgets and see if they 'add up'.