Courses AQA GCSE Computer Science Python Coding Arithmetic Operators

Arithmetic Operators

Standard Arithmetic Operators ( + - * / )

Standard arithmetic functions work as normal in Python. Take note that multiplication is achieved using an asterisk * .

   a = 5
   b = 3
   result = a + b

   result = a - b
   print(result) #The output will be 2.

   result = a * b
   print(result) #The output will be 15.

   a = 10
   b = 2
   result = a / b
   print(result) # The output will be 5.0.

Arithmetic operators are used to perform [[mathematical]] calculations.

{"cloze_text": "Arithmetic operators are used to perform [[mathematical]] calculations."}

The arithmetic operator [[*]] is used to perform multiplication.

{"cloze_text": "The arithmetic operator [[*]] is used to perform multiplication."}

In Python, what is the result of the expression 20 - 10?

{"answers": {"A": "10", "B": "None", "C": "30", "D": "20"}, "question_text": "In Python, what is the result of the expression 20 - 10?", "correct_answer": "A"}

Modulo (%)

The modulo operator is used to find the remainder of a division. For example:

   a = 15
   b = 4
   result = a % b
   print(result) #The output will be 3.

What is the remainder when 7 is divided by 2?

{"answers": {"A": "3", "B": "2", "C": "1", "D": "0"}, "question_text": "What is the remainder when 7 is divided by 2?", "correct_answer": "C"}

Floor division

Floor division (also known as integer division) is performed using the double forward slash operator //.

It divides one number by another and returns the quotient rounded down to the nearest whole number.

x = 10
y = 3
result = x // y  # Floor division of 10 by 3
print(result)    # Output: 3

What is the result of 10 // 3?

{"answers": {"A": "3", "B": "2", "C": "3.33", "D": "2.5"}, "question_text": "What is the result of 10 // 3?", "correct_answer": "A"}

Exponentiation (**)

The exponentiation operator is used to raise a number to a power.

Example:

   a = 2
   b = 3
   result = a ** b
   print(result) #The output will be 8.

In Python, what is the result of 2 ** 4?

{"answers": {"A": "6", "B": "0.5", "C": "16", "D": "8"}, "question_text": "In Python, what is the result of 2 ** 4?", "correct_answer": "C"}

Review: Fill in the Blanks

Standard arithmetic operators in Python include addition, subtraction, multiplication, and division. Multiplication is represented by the (*), while division is performed using the (/). For example, if you have variables a and b, you can find the sum of a and b using the expression a + b.

The modulo operator, denoted by (%), is utilized to determine the of a division. For instance, if a is 15 and b is 4, the expression a % b will yield a result of 3, which represents the remainder when 15 is divided by 4.

Floor division, also known as integer division, is executed using the (//). This operator divides one number by another and returns the rounded down to the nearest whole number. For example, using x = 10 and y = 3, the expression x // y gives an output of 3.

Exponentiation is performed with the (**) operator, which raises a number to a specific . For instance, if a is 2 and b is 3, the expression a ** b will produce a result of 8, as it calculates 2 raised to the power of 3.

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