Calculator in C#

using System;

namespace CalculatorInCSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter a number: ");
            int num1 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Enter another number: ");
            int num2 = Convert.ToInt32(Console.ReadLine());


            Console.WriteLine("Add, subtract, multiply, or divide? (Say in lower case letters)");
            string type = Console.ReadLine();

            if (type == "add")
            {
                Console.WriteLine(num1 + num2);
            } else if (type == "subtract")
            {
                Console.WriteLine(num1 - num2);
            } else if (type == "multiply")
            {
                Console.WriteLine(num1 * num2);
            } else if (type == "divide")
            {
                Console.WriteLine(num1 / num2);
            } else
            {
                Console.WriteLine("That isn't a type of math.");
            }
        }
    }
}