Meaning of sum in English
1. a number that you get from adding two or more numbers together
The sum of 3 and 4 is 7.
borrow small sums
Large sums of money were lost.
3. the total of several numbers or amounts taken together
the total of expenses
My expenses on the party summed up to $ 1,000.
2. add up to find the sum of two or more numbers or amounts
If you add 3 and[to] 7, you get 10.