main.dart

void main() {

num add = additon(15, 15);
  print('The addition of the two numbers is $add');
  num sub = subtraction(40, 20);
  print('The substraction of the two numbers is $sub');
  num xly = multiplication(10, 5);
  print('The multiplication of the two numbers is $xly');
  num mod = modulus(51, 2);
  print('The modulus of the two numbers is $mod');
  num div = division(100, 2);
  print('The division of the two numbers is $div');
}
num additon(num firstNum, num secondNum) {
  num result = firstNum + secondNum;
  return result;
}

num subtraction(num firstNum, num secondNum) {
  num result = firstNum - secondNum;
  return result;
}

num division(num dividend, num divisor) {
  num result = dividend / divisor;
  return result;
}

num multiplication(num firstNum, num secondNum) {
  num result = firstNum * secondNum;
  return result;
}

num modulus(num dividend, num divisor) {
  num result = dividend % divisor;
  return result;
}

task completed