function Add(...theArgs) {
  let total = 0;
  for (let arg of theArgs) {
    total += arg;
  }
  return total;
}

console.log(Add(1, 2, 3,4,5,6,7,8,9,10));
// Expected output: 55

console.log(Add(11,22,33,44,55,66,77,88,99));
// Expected output: 495