
def my_name(firstname):
    print("my name is ", firstname)
    return 'my name is ' + firstname

def add(num1,num2):
    return num1 + num2

def minus(num1,num2):
    return num1 - num2

def multi(num1,num2):
    return num1 * num2

def div(num1,num2):
    return num1 / num2