Arithmetic

Learn +, -, *, /, //, %, ** operators.

Arithmetic operators

Python has operators for arithmetic: + addition, - subtraction, * multiplication, / division.

Additionally: % modulo (remainder), ** power, // floor division. Floor division rounds down: 7 // 2 gives 3.

print(7 % 3)   # 1 (remainder)
print(2 ** 3)   # 8 (power)
print(7 // 2)   # 3 (floor division)

These operators work with int and float. Division always returns a float.

** is the power operator: 2 ** 3 = 8. // is floor division: it rounds down.

print(5 ** 2)    # 25
print(9 // 2)    # 4 (4.5 down -> 4)
print(-9 // 2)   # -5 (-4.5 down -> -5)

Floor division needs care with negatives: -9 // 2 gives -5 because -4.5 is rounded down.

Assign a = 10 and b = 3. Print the remainder with print(a % b) and floor division with print(a // b).

Show example solution

a = 10
b = 3
print(a % b)
print(a // b)

Complete the power operation

result = 2 ____ 3
print(result)

Show answer

result = 2 ** 3
print(result)

Next lesson: Comparison