Klein Prep Computer Science

Setup Eclipse IDE

Click here to review my notes on adding and subtracting in computer math numbers.

Adding - Click on links below for sample problem.

• Adding Binary
• Easy Practice Problems Bin 100 - Click here
• Hard Practice Problems Bin 500 - Click here
• Adding Octal
• Easy Practice Problems Oct 100 - Click here
• Hard Practice Problems Oct 500 - Click here
• Adding Hexadecimal
• Easy Practice Problems Hex 100 - Click here
• Hard Practice Problems Hex 500 - Click here

Subtraction - Click on links below for sample problem.

• Subtraction Octal
• Easy Practice Problems Oct 200 - Click here
• Hard Practice Problems Oct 600 - Click here
• Subtraction Hexadecimal
• Easy Practice Problems Hex 200 - Click here
• Hard Practice Problems Hex 600 - Click here

2 Complement for Binary Substraction.

• Click here to explain 2's Complement
• 2's Complement - Click to to review my notes.
• Practice Problems - Click here

• Computer Math Conversion. Click here
• binary (base 2)
• Easy Practice Problems Bin 300 - Click here
• Hard Practice Problems Bin 700 - Click here
• octal (base 8)
• Easy Practice Problems Oct 300 - Click here
• Hard Practice Problems Oct 700 - Click here
• hexadecimal (base 16)
• Easy Practice Problems Hex 300 - Click here
• Hard Practice Problems Hex 700 - Click here

Code High School Instructions for signing up.

1. Click here to see your Code High School instructions.
   • Screen print showing you are signed in.
   • Name the Screen Print PX_lastname_CodeHSsignin.
   • Save your file in your Google Drive under the directory structure Mr. Cusack told you to do.
   • Drop it off into google classroom.

Your initials

Mr. Cusack will explain the instructions.
Your java file name will be PX_lastname_Initials.java.
The next file will be PX_lastname_Initials.png (Screen print of code in Eclipse)
The 3rd file will be PX_lastname_Initials.mp4 (Video of you running the program) Drop all 3 files into google drive under 2026_27KleinCollins\P5_APCS_A
Drop all 3 files into google classroom.

Click here to read over these notes on variables.

See Mr. Cusack for the program source code.
Your java file name will be PX_lastname_variable.java.
The next file will be PX_lastname_variable.png (Screen print of code in Eclipse)
The 3rd file will be PX_lastname_variable.mp4 (Video of you running the program) Drop all 3 files into google drive under 2026_27KleinCollins\P5_APCS_A
Drop all 3 files into google classroom.