Solution:

Summary

Solution:

Open doors.

Solution:

O + Pi + nion (Pi In Onion)
= Opinion

Solution:

I Over Ate

Explanation:
Check the mathematical solution on the image below.
Also, 8 in 2018 resembles a fat person.

Solution:

Slumdog Millionare = Slum + Dog + Million + air

Solution:

12 Angry Men

Explanation:
12 (dozen = 12)
Angry (Angry Bed)
Men

Solution:

Pie

Explanation:
This is the bar graph that represents the number (3, 1, 4, 1, 5, 9, 2, 6, 5).
and we know the value of pie is 3.14159265

Solution:

Lucky days are here again.

Explanation:
Lucky + Day + s + R + H + Ear + Again (Flower represent lucky symbol)

Solution:

FORREST GUMP

Explanation:
FOR (four [o'clock]) + REST (person lying in bed) + GUMP ([bubble] gum + p)

Solution:

Karate Kid (car + at + tea + kid)