YEAR 4 QUIZ 1

What is a variable in programming?

• A fixed value
• A storage for changing values
• A type of function
• An operator

Answer explanation

A variable holds a value that can change.

Which operator is used for addition in programming?

• +
• -
• *
• /

Answer explanation

The '+' operator is used for addition.

What is the purpose of the 'equal to' operator?

• To assign values
• To compare values
• To perform addition
• To subtract values

Answer explanation

The 'equal to' operator checks if two values are the same.

What does 'assigning a value to a variable' mean?

• Giving a value to a variable
• Deleting a variable
• Changing a program
• Creating a new algorithm

Answer explanation

Assigning means giving a value to a variable to store.

What type of value is '23' in programming?

• Text
• Number
• Symbol
• Operator

Answer explanation

'23' is a number in programming.

Which planet is the closest to the Sun?

• Venus
• Mars
• Mercury
• Earth

Answer explanation

Mercury is the closest planet to the Sun.

What is the primary purpose of a program in computing?

• To calculate numbers
• To store data
• To perform tasks based on instructions
• To create visuals

Answer explanation

A program is used to perform tasks based on given instructions.

What does the operator '-' do in programming?

• Subtracts
• Multiplies
• Divides
• Adds

Answer explanation

The '-' operator is used for subtraction.

Which of the following is a valid variable name?

• 1variable
• Variable_1
• _variable
• None of the above

Answer explanation

Variable names must not start with a number, so 'Variable_1' is valid.

What does 'algorithm' refer to in computing?

• A type of variable
• A set of instructions to perform a task
• A programming language
• A storage device

Answer explanation

An algorithm is a set of instructions used to perform a specific task.