Binary Addition
Lesson Instructions
Watch and follow the YouTube video, the lesson contains three parts:
Key Information and content - all you need to do here is watch and listen
Learning activity - there are two activities, the first is a binary addition quiz, you may want to do your working on paper. The second is an activity about the impact of overflow errors.
Consolidation - these are past exam questions and are for deliberate practice to check your understanding.
Binary Addition Full Lesson Video.mp4Task 1 - Binary Addition
Task 2 - Binary Addition Overflow
Task - Exam Questions - Deliberate Practice
Mark Scheme
Question 1
Answer: 1 1 1 0 1 1 1 1
One mark per nibble
Question 2
Answer: 0 1 1 0 1 1 1 1
Mark points for:
First nibble correct with carries shown
Second nibble correct
There is an overflow....
....because the result is greater than 255 / cannot be represented in 8 bits
NOTE: Accept 9 bit answers
Question 3
1 mark for each:
a : 1100001
e: 1100101
Correct answer only. Do not allow leading zeros.