#1. when you are adding they are called addends
#2. When you are subtracting they are called the first number is called a minuend and the second one is called a subtrahend
#3. a sum is an answer to a addition problem
#4. a difference is a answer to a subtraction problem
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Adding two numbers can never yield an odd number - since all odd numbers are divisible by 1 - and adding 1 to 1 always yields 2 !
That is not possible; adding two even numbers always gives an even number
The sum. the sum of
No
Factors. When two numbers are multiplied, the answer is called the product.