Free Printable Algorithms

Worksheets

Algorithms - python (GCSE)

Total questions: 25

Worksheet time: 15mins

Name

Class

Date

What is an algorithm?

A set of rules

Step by step instructions to solve a problem

Instructions that are executed one after another

Instructions that are completed in a random order

Code repeated / looped until a condition has been met or a set number of times.

Sequence

Selection

Iteration

Variable

Joining elements together to make a string is called what?

Combining

Connecting

Concatenation

Stringing

people = ["John", "Rob", "Bob"]

print (people[1])

what would this result be?

John

Rob

Bob

people = ["John", "Rob", "Bob"]

print (people[4])

what would this result be?

John

Rob

Bob

Error

To repeat a fixed number of times use a

while loop

for loop

if loop

indentation

To repeat until a particular condition is true use

while loop

for loop

if loop

indentation

A data type than can have one of two values: True or False

boolean

variable

modulo

interpreter

To solve a problem that requires the user to enter 10 numbers would use what type of iteration?

While loop

For loop

Variable

Selection

10.

What letter will be printed on the screen after running this code:

Nothing prints

11.

In the following code, "city" is an example of a what?

List

Loop

Variable

Array

12.

What output will this code produce?

Exeter

city

13.

What is the % used for in Python?

To give the remainder

To divide and return an integer

To divide and return a float

To give the percentage

14.

What is a variable?

Step by step instructions to solve a problem

A location in memory that stores a value, and that value can change

A set of rules

A location in memory that stores a value, and that value cannot change

15.

How many parameters doe the code have?

16.

Is this a function or a procedure?

Function

Procedure

17.

Using a binary search why will the number 9 never be found in the following list:
11, 8, 13, 9, 7, 3

It does not work on numbers

It only works on letters

The list is not in order

18.

Which of the following descriptions best describes a linear search:

Put the elements in order, check each item in turn

Put the elements in order, compare with the middle value, split the list in order and repeat

Elements do not need to be in order, check each item in turn.

Elements do not need to be in order, compare to the middle value, split the list in order and repeat.

19.

Which of the following is NOT a sort algorithm?

Bubble

Merge

Insertion

Linear

20.

Which of the following describes a merge sort?

Compares each pair and swaps

List is split in two and merged together in order

List is split into 2 and kept seperate

None of the above

21.

Bubble sort takes the first two values of a list, and swaps them if wrong?

True

False

22.

What is this code an example of:

IF length of password <= 6 THEN

print(“Password is too short.”)

ELSE

print(“password is valid.”)

ENDIF

Selection

Iteration

Sequence

23.

This code uses which construct?

x = 0

WHILE x < 5

print(x)

x = x + 1

END WHILE

Sequence

Selection

Iteration

24.

What is the difference between a subroutine and a function?

They are the same thing

A function can run without being called

A function returns a value to the main program

25.

What keyword indicates that it is a function and not a procedure?

RETURN

INT

DEF

Reset

Algorithms - python (GCSE)

Total questions: 25

Worksheet time: 15mins

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