python math quiz fail [on hold]

okay, so ive tried to create a python maths quiz for my children to Improve their math skills but I cant figure out what is wrong with my code?

print ("what is your username")
name = input () .title()
print (name, "welcome")
import random
score=0
question=0
for i in range(10):
 ops = ["+", "-", "*"]
 num1 = random.randint (0,10)
 num2 = random.randint (0,10)
 oparator = random.choice(ops)
 Q=(str(num1)+(oparator)+(str(num2)))
 print (Q)
 guess = input()
 guess = int(guess)
 if oparator =='+':
    answer = ("num1+num2")

 elif oparator =='-':
    answer = ("num1-num2")

 else:
        oparator =='*'
        answer = ("num1*num2")

 if guess == (Q):  
    print ("correct")
    score + 1

 else:
        print ("incorrect")

im not very skilled at programing and I am only starting to learn how to on a course. any help would be really greatly thanked :) my problem is that no matter what I do it will always say the answer in incorrect