Figured it out but what's a better way?

// 1. Attach this file -- math.js -- to the index.html file using a <script> tag

// 2. Add an alert to announce the program with a message like "Let's do some math!"
alert("Let's do some math!");
// 3. Create a variable and use the prompt() method to collect a number from a visitor
var num1 = parseFloat(prompt('Please enter a number:'));
// 4. Convert that value from a string to a floating point number

// 5. Repeat steps 3 and 4 to create a second variable and collect a second number
var num2 = parseFloat(prompt('Please enter a second number:'));

// 6. Create a new variable -- message -- which you'll use to build
//    a complete message to print to the document
//    Start by creating a string that includes <h1> tags as well
//    and the two input numbers. The string should look something like this:
//    "<h1>Math  with the numbers 3 and 4</h1>" where the two numbers are
//    the values input from the user. Use string concatenation to create this
//    and make sure you actually perform the math on the values by 
//    using the + symbol to add their values together
var message = "<h1>Math with the numbers " + num1 + " and " + num2 + "</h1>";
// 7. Add another string to the message variable. 
//    The string should look something like this after concatenation:
//    "3 + 4 = 7"
message += num1 + " + " + num2 + " = " + (num1 + num2) + "<br>";
// 8. Add a linebreak tag -- <br> -- to the message variable

// 9. Continue to add to the message variable to include strings
//    demonstrating multiplication, division and subtraction
//    For example:
//    "3 * 4 = 12"
//    "3 / 4 = 0.75"
//    "3 - 4 = -1"
message += num1 + " * " + num2 + " = " + (num1 * num2) + "<br>";
message += num1 + " / " + num2 + " = " + (num1 / num2) + "<br>";
message += num1 + " - " + num2 + " = " + (num1 - num2);
// 10. Use the document.write() method to print the message variable 
//     to the web page. Open the finished.png file in this workspace
//     to see what the completed output should look like
document.write(message);

alert('Ready to do math?');
var num = prompt('Put in a number');
var num = parseFloat(num);
var numTwo = prompt('Put in another one');
var num = parseFloat(num);
var numTwo = parseFloat(numTwo);
var add = num + numTwo;
var Multiple = num * numTwo;
var subtract = num - numTwo;
var divide = num/numTwo;
var message = 'Math with your numbers ' + num + ' and ' + numTwo;
var addition = num + ' ';
var additiontwo = numTwo + ' ';
addition += ' + ' + additiontwo + '= ';
var sub = num + ' ';
var subTwo = numTwo + ' ';
sub+= ' - ' + subTwo + ' = ';
var multiplication = num + ' ';
var multiplicationTwo = numTwo + ' ';
multiplication+= ' * ' + multiplicationTwo + ' = ';
var div = num + ' ';
var divTwo = numTwo + ' ';
div+= ' / ' + divTwo + ' = ';
document.write('<h1>'+message+'</h1>');
document.write(addition + add);
document.write("<br>");
document.write(sub + subtract);
document.write("<br>");
document.write(multiplication + Multiple);
document.write("<br>");
document.write(div + divide);

var visitorNum1 = prompt("Please Enter a Number");
var visitorNum2 = prompt("Please Enter a Second Number");
var message = "<h1>Math with the numbers " + visitorNum1 + " and " + visitorNum2 + "</h1>";
//And the first math operation becomes:
message += visitorNum1 + " + " + visitorNum2 + " = " + parseFloat(visitorNum1+visitorNum2);

document.write(message);

var message = "Hello ";
var name = "Kenny";

message += name;
document.write(message);
//Hello Kenny

var lastName = "Dubroff";

//message was "Hello Kenny" from before
message += lastName
document.write(message);
//Hello KennyDubroff

//notice the dummy space after hello and the dummy space between name and lastName
message = "Hello " + name  + " " + lastName;
document.write(message);
//Hello Kenny Dubroff