The result of adding two numbers is their sum.
Adding two or more numbers together gives you a sum.
The sum. the sum of
you call them problems because you need to figure it out and it could come in your life and you have to figure it out
Addend plus addend equals sum.
If you are adding, the result is a sum. This terminology applies whether the addends (the terms you are adding) are whole numbers or they are expressed as fractions or in decimal notation. The same is true of the sum.
You can't, a SUM is the amount obtained as a result of adding numbers (18+7=25)18x7 is asking you to MULTIPLY the two numbers. This is call the PRODUCT of the two numbers (18*7 = 126).