Confusing words explained
“some” vs “sum” — What’s the Difference?
some means an unspecified amount; sum is the total of numbers
Key takeaway
Quick Difference: some vs sum
some means an unspecified amount; sum is the total of numbers
some vs sum Side-by-Side Comparison
Meaning of some
An unspecified or indefinite amount or number of something.
A part of something; not all, but not none.
Use before nouns to indicate an indefinite quantity. Works with both countable and uncountable nouns.
- Would you like some coffee?
- Some students prefer to study in the morning.
Meaning of sum
The total amount you get when you add numbers together.
The result when you add two or more numbers or amounts together.
Use sum for mathematics or total amounts; use some for unspecified quantities.
- The sum of five plus three is eight.
- He paid a large sum of money for the car.
How to Remember the Difference
Some = a quantity. Sum = total (add-sum).
Common Mistakes with some and sum
Mistake with some
Wrong: I have some informations for you.
Correct: I have some information for you.
Information is uncountable. Use 'some information', not 'some informations'.
Mistake with some
Wrong: Some of the students is arriving soon.
Correct: Some of the students are arriving soon.
With plural nouns, verb must be plural: 'are', not 'is'.
Mistake with sum
Wrong: I have some money left to pay.
Correct: I have a sum of money left to pay.
Sum refers to specific total; some refers to unspecified quantity.
Mistake with sum
Wrong: The sum are ten dollars.
Correct: The sum is ten dollars.
Sum is singular; use is with singular nouns.
Practice Quiz: some or sum?
Choose the word that best completes each real example sentence.
Question 1
Would you like _____ coffee?
Question 2
_____ students prefer to study in the morning.
Question 3
_____ of the evidence was incomplete.
Pick at least one answer, then press Check answers to see how you did.
You scored 0 out of 3
Frequently Asked Questions About some vs sum
What’s the difference between “some” and “sum”?
some means an unspecified amount; sum is the total of numbers
When should I use “some”?
Use before nouns to indicate an indefinite quantity. Works with both countable and uncountable nouns.
When should I use “sum”?
Use sum for mathematics or total amounts; use some for unspecified quantities.
How can I remember some vs sum?
Some = a quantity. Sum = total (add-sum).
Is it “some” or “sum” in example sentences?
Use the quiz above to test the pair with real example sentences from the available word data.