+ vs. -

a conversation I had while helping a six year old little boy do his homework:

M: "Have you been practicing your subtraction? Do you have any questions before you start?"

S: "Really, I just like addition better than subtraction."

M: "That's ok, but why is that?"

S: "Well when it's like eating cookies and doing addition, you get to eat more. But when you subtract them, you have less cookies."

M: "Totally understandable."