2.1 Algorithms

Question 1

What are the three types of computational thinking? [3]

Answer 1

Abstraction [1] Decomposition [1] Algorithmic thinking [1]

Question 2

What is abstraction? [2]

Answer 2

Removing unnecessary detail [1] to focus on the important parts of a problem [1]

Question 3

What is decomposition? [2]

Answer 3

Breaking a large problem down into smaller problems [1] until the problems are small enough to solve [1]

Question 4

What is algorithmic thinking? [2]

Answer 4

Structuring a problem so it can be solved by a computer [1] usually by making it quantitative [1]

Question 5

What are the three programming constructs? [3]

Answer 5

Sequence [1] Selection [1] Iteration [1]

Question 6

What is programming in sequence? [2]

Answer 6

Instructions in order [1] processed one after the other [1]

Question 7

What is programming using iteration? [2]

Answer 7

Repeating sections of code [1] until conditions are met [1]

Question 8

What is programming using selection? [2]

Answer 8

Choosing which code to run [1] based on a decision [1]

Question 9

When writing an input in an algorithm what must we remember to do? [1]

Answer 9

Assign the input to a variable [1]

Question 10

What is a structure diagram? [3]

Answer 10

A diagram that shows the problem you’re solving at the top [1] then breaks the problem down into smaller problems below [1] then breaks those problems down into smaller problems etc [1]