def add(x,y):
    add=x+y
    print("addition is:",x+y)
def sub(x,y):
    sub=x-y
    print("substraction is:",x-y)
def mul(x,y):
    sub=x*y
    print("multiplition is:",x*y)
def div(x,y):
    div=x/y
    print("division is:",x/y)
def power(x,y):
    power=x**y
    print("power is:",x**y)
add(2,4)
sub(5,3)
mul(2,2)
div(8,2)
power(2,3)