What are Arithmetic Operations?
Arithmetic operations are the basic math operations you learned in school. Python makes it easy to perform these operations just like a calculator!
Python supports the following arithmetic operators:
+(Addition)-(Subtraction)*(Multiplication)/(Division)//(Floor Division)%(Modulus)**(Exponentiation)
Let’s break them down one by one!
Addition (+)
Used to add two numbers together.
a = 10
b = 5
sum_result = a + b
print(sum_result) # Output: 15
You can even add strings!
name = "Python" + " Rocks!"
print(name) # Output: Python Rocks!
Subtraction (-)
Used to find the difference between two numbers.
a = 20
b = 7
difference = a - b
print(difference) # Output: 13
Multiplication (*)
Used to multiply numbers.
a = 6
b = 4
product = a * b
print(product) # Output: 24
Strings can also be multiplied! (Yes, really!)
laugh = "Ha" * 3
print(laugh) # Output: HaHaHa
Division (/)
Returns the result of division as a float (decimal number).
a = 10
b = 3
division_result = a / b
print(division_result) # Output: 3.3333333333333335
Floor Division (//)
Divides and rounds down to the nearest whole number.
a = 10
b = 3
floor_div = a // b
print(floor_div) # Output: 3
Even with floats:
c = 7.5
d = 2
floor_div = c // d
print(floor_div) # Output: 3.0
Modulus (%)
Returns the remainder after division.
a = 10
b = 3
remainder = a % b
print(remainder) # Output: 1
It’s useful for checking if a number is even or odd:
num = 7
if num % 2 == 0:
print("Even")
else:
print("Odd") # Output: Odd
Exponentiation (**)
Raises a number to the power of another number.
base = 2
exponent = 3
result = base ** exponent
print(result) # Output: 8 (2³ = 8)
Want to calculate square roots? Use ** 0.5!
number = 16
sqrt = number ** 0.5
print(sqrt) # Output: 4.0
Operator Precedence
Just like in math, Python follows PEMDAS (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction).
result = 10 + 3 * 2 # Multiplication happens first!
print(result) # Output: 16
Use parentheses to control precedence:
result = (10 + 3) * 2
print(result) # Output: 26
Summary
| Operator | Operation |
|---|---|
+ |
Addition |
- |
Subtraction |
* |
Multiplication |
/ |
Division (float result) |
// |
Floor Division (integer result) |
% |
Modulus (remainder) |
** |
Exponentiation |
Now go forth and do some Python math magic!
0 Comments