Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
do sums
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "do sums" is correct and can be used in written English.
It is usually used as a verb, for example: "I need to do sums to prepare for the math exam".
✓ Grammatically correct
Education
Mathematics
General Conversation
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
22 human-written examples
Employers complain that even those who have passed the exams often can't spell or do sums.
News & Media
Calculators were forbidden until students could do sums in their heads.
News & Media
The more there are, the faster the machine can do sums.
News & Media
"Or they use them to do sums, or jot down things or send messages of love".
News & Media
MESSAGE His 1984 book "Tough Times Never Last, but Tough People Do" sums up his upbeat ministry.
News & Media
Many teenagers drop out because they left primary school unable to read and do sums, and never caught up.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
38 human-written examples
2day i try 2 do sum siteseein.
News & Media
Those weren't, of course, his exact words in his Autumn Statement, but they do sum up his grim message.
News & Media
Though upon consideration, they really do sum up the whole thing very well: they're all cock and no balls.
News & Media
"To show the character we did sums up our season.
News & Media
Emma perches on a high stool at the kitchen counter, doing sums in her math book.
News & Media
Expert writing Tips
Best practice
Use "do sums" when referring to basic arithmetic or simple calculations, especially in informal contexts.
Common error
Avoid using "do sums" in professional or academic writing. Opt for more formal alternatives like "perform calculations" or "compute figures".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "do sums" functions as a verb phrase indicating the action of performing basic arithmetic calculations. As Ludwig AI suggests, it's a common expression found in various contexts.
Frequent in
News & Media
36%
Science
22%
Wiki
14%
Less common in
Formal & Business
8%
The Economist
5%
The Guardian
3%
Ludwig's WRAP-UP
In summary, "do sums" is a grammatically correct and commonly used verb phrase that signifies performing basic arithmetic calculations. While Ludwig AI confirms its validity, it's essential to note the register. As the analysis reveals, it is more fitting for informal conversations and general contexts. For formal or professional scenarios, consider using alternatives such as "perform calculations" or "compute numbers" to maintain a more appropriate tone. The phrase is frequently found in News & Media.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
perform calculations
Replaces the informal "do sums" with a more formal term for mathematical operations.
make calculations
Similar to "perform calculations" but slightly less formal.
calculate figures
Emphasizes the act of computing numerical values.
figure out sums
Emphasizes the understanding and resolution of mathematical problems.
work out totals
Focuses on finding the aggregate or final amount.
handle arithmetic
Focuses specifically on dealing with basic mathematical operations.
compute numbers
A more technical and formal way of saying "do sums".
process numbers
Refers to the systematic handling and manipulation of numerical data.
solve equations
Highlights the process of finding solutions to mathematical problems.
undertake computations
A very formal and professional term for mathematical calculations.
FAQs
What does it mean to "do sums"?
To "do sums" means to perform basic arithmetic calculations, such as addition, subtraction, multiplication, or division.
When is it appropriate to use the phrase "do sums"?
The phrase "do sums" is appropriate in informal contexts, such as casual conversations or when teaching basic math to children. In more formal settings, consider using phrases like "perform calculations" or "calculate figures".
Are there any situations where I shouldn't use "do sums"?
Avoid using "do sums" in formal writing, professional reports, or academic papers. It may sound too informal or simplistic for these contexts.
What are some alternative ways to say "do sums"?
Alternatives include "perform calculations", "calculate figures", "work out totals", or "compute numbers", depending on the specific context and level of formality required.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested