The sum.
In an addition sum, if the missing number is the first number, for example, x + 5 = 10, then to find x, perform the sum 10 - 5, producing the solution x = 5. In a subtraction sum, if the missing number is the second number, for example, 7 - y = 4, then to find y, perform the sum 7 - 4 = 3, production the solution y = 3.
In order to know which operation, you have to find the keywords. EX: how many more, difference, sum, total, etc.
An additive operation is an operation which produces the sum of two operands.
By adding.
The sum.
In an addition sum, if the missing number is the first number, for example, x + 5 = 10, then to find x, perform the sum 10 - 5, producing the solution x = 5. In a subtraction sum, if the missing number is the second number, for example, 7 - y = 4, then to find y, perform the sum 7 - 4 = 3, production the solution y = 3.
In order to know which operation, you have to find the keywords. EX: how many more, difference, sum, total, etc.
An additive operation is an operation which produces the sum of two operands.
By adding.
The answer will depend on what operation you have in mind.
a sum
addition
43. A sum is a binary operation. You have a sum of two things. There is no sense in a sum of one thing.
The operation is called addition.
A sum is an operation involving two or more numbers. You cannot have a sum of a single number.
The sum of 8 and 4 is 12. In mathematics, addition is the operation of combining two or more numbers to find their total. In this case, when you add 8 and 4 together, you get the sum of 12.