Contribute correction: Optellen en Aftrekken tot 100

 _____     _    _               ______  
|  __ \\  | || | ||   ____     /_   _// 
| |  \ || | || | ||  |    \\    -| ||-  
| |__/ || | \\_/ ||  | [] ||    _| ||_  
|_____//   \____//   |  __//   /_____// 
 -----`     `---`    |_|`-`    `-----`  
                     `-`