www.universalclass.com/articles/math/pre-algebra/the-four-basic-mathematical-operations-.htm
On this website says that basic operations were invented in 1489. There were multiple years that the Addition sign and the Subtraction sign were there. There was from 1417 all the way through 2017.
On this website says that basic operations were invented in 1489. There were multiple years that the Addition sign and the Subtraction sign were there. There was from 1417 all the way through 2017.
I think kids should try to be the next best thing when they get born I think you should be the next great thing if u want to be the next great thing be it.