Making top down program into different classes

I have a code that works fine but I'd like to break it up into three different classes. I'm not good with returning and instantiating classes.

import java.util.Random;

	public class MathTest
	{
public static void main (String [] args)
   {

	  //local constants
	    final int RANGE         = 10;    //# of diff values to create
	    final int NUM_QUESTIONS = 5;
	    final int QUIT          = 2;

	  //local variables
	    int num1;            		  // 1st number
	    int num2;   				  // 2nd number
	    int answer;                   // answer to the addition problem
	    int userSelection;            // user selects to take test or to quit
	    int numCorrect;               // number of correct answers
	    float testScore;                // test score of user in percentage
        Random gen = new Random();    // Random class to generate random numbers

			   Library myLib = new Library ();

		 //Display test menu and input user choice
		   System.out.print("\n\n                          Simple Math Tests Made Easy\n\n" +
		                            "                                1. Take a Test\n" +
		                            "                                2. Quit\n\n" +
		                            "                                Enter Choice: ");
		   userSelection = Keyboard.readInt();

		 //WHILE (user selection is take test)
		   while(userSelection != QUIT)

		         {

		 //Clear the screen
		   myLib.clrscr();

		 //Init number correct to 0
		   numCorrect = 0;

		 //FOR (Each of the 5 questions)
		   for (int count = 0; count < NUM_QUESTIONS; count++)
		   {
		 //Generate two random singal digit numbers
		   num1 = gen.nextInt(RANGE);
		   num2 = gen.nextInt(RANGE);

		 //Display the equation and input user answer
		   System.out.print("\n\n\n\n\t\t\t\t\t\t\t\t" +
		                                   num1 + " + " + num2 + " = ");
		   answer = Keyboard.readInt();

		 //IF (answer is correct)
		   if (answer == num1 + num2)
			{

		 // Display Correct
		   System.out.println ( " CORRECT  " );

		 //Add 1 to number correct
		   numCorrect++;

		}

		 // ELSE Display answer is Incorrect
			else
		 	 {
				 System.out.println ( " INCORRECT " );
			 }

		//Pause the Screen
		  myLib.pause();

	    //Clear the screen
		  myLib.clrscr();


		}

		// calculate the test score average
		testScore = ( (float) numCorrect / NUM_QUESTIONS) * 100;

		//Output the results
		System.out.print("\n\n                          RESULTS OF THE TEST \n\n" +
				  		                    "                                "    +
				  		                    "                                " +
		  		                            "                                          %" + testScore  );
		System.out.print("\n\n       ");

		//Pause the Screen
		  myLib.pause();

		 //Clear the screen
		  myLib.clrscr();

		  //Display test menu and input user choice
		  	System.out.print("\n\n                          Simple Math Tests Made Easy\n\n" +
		  		                            "                                1. Take a Test\n" +
		  		                            "                                2. Quit\n\n" +
		  		                            "                                Enter Choice: ");
		   userSelection = Keyboard.readInt();



		      }



		   } //end main method

		} //end MathTest

I've written a pseudocode based on my understanding of creating classes but honestly don't know how to break it down.

here's my pseudocode

/************************************************************************
*BEGIN Create Test
* Set num correct to 0
* FOR (Each question to generate)
* create single digit random number
* create second single digit random number
* display equation and prompt user for answer
* IF (user's answer is correct)
* display "correct" message
* add 1 num correct
* ELSE
* display "incorrect message
* END IF
* END FOR
* Calculate test score
* Return test score
*END Create Test
*************************************************************************/

/********************************************************
*
* BEGIN Display Menu
* Display user menu
* prompt user for selection
* return user selection
* END Display Menu
*
*********************************************************/

/************************************************************************
*
*BEGIN Main
* call menu method to return user's choice menuInput for user
* WHILE menuInput is not QUIT
* Set number correct to 0
* Call method to create test and return test score
* Clear screen
* Display test score
* call menu method to return user's choice menuInput for user
* END IF
*END Main
**************************************************************************/