3 reasons: a) you need it to do math in school b) you need it to add if you are working as a salesperson or cashier or manager c) it's not important if you hate math
the addition sign
The addition sign was invented in Oakland California.
The addition sign was first used in 1544.
This can be called * A Plus sign * An Adding sign
The plus or addition sign was invented by Michael Stiple in 1544
The addition sign is on your computer keyboard. The key is right next to the backspace button. You press shift-(the key) and you will get the addition sign.
Do the addition. Keep the sign.
There are many parts that go into an addition problem. Most often there are numbers, a plus sign, and an equals sign.
It is the sign used for addition in mathematics. 10 + 6 = 16
The numbers, and the plus sign.
terms
The less than sign I believe that you are talking about is the minus/subtraction sign? The addition sign, +, is the opposite of the subtraction sign :)