If you get 100% on this, you have smarty pants

if you get 100% on this, you have smarty pants.

1 What is my name?
2 Geuss a number, 1-20
3 What is 2*2-2*9-5+4-3*2-6+12-45+12*2*5+45-32*20-89? i know....
4 How many gallons does the average human drink a day?
5 Twinkle Twinkle Little ______
6 Who is our current president?