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Twos Complement (GCSE Computing)

The following is a GCSE Computing test covering 'Twos Complement' from the broader topic 1. Data Representation. The test is geared towards the CAMBRIGE-IGCSE exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

What is the correct description of two’s complement representation for signed integers?
What decimal value does the 8-bit two’s complement 10000000 represent?
To compute A - B using two’s complement arithmetic you should:
Add these 8-bit two’s complement numbers: 00000110 (+6) + 11111010 (-6). What is the 8-bit result?
Find the two’s complement (negation) of 00111011 (8-bit).
Which process correctly produces the two’s complement of a binary number?
Which numeric operation is made simpler by two’s complement representation in digital hardware?
Convert -13 to an 8-bit two’s complement binary number.
How many distinct values can be encoded with n bits using two’s complement?
What is the 8-bit two’s complement representation of -1?
How is sign extension performed when converting an 8-bit two’s complement number to 16 bits?