It is because you think that you can't think of 194 + 473 so we get confused

Facial Expression: Confused

Explanation:
When Shreya cannot understand a maths question, her facial expression is likely to be one of confusion. Here's why:

1. Lack of Understanding:
When faced with a maths question that Shreya cannot comprehend, her facial expression is likely to show confusion. This is because she may not be able to make sense of the problem or understand the concepts involved.

2. Expression of Puzzlement:
Confusion is often displayed through facial expressions such as raised eyebrows, a furrowed forehead, or a puzzled look. Shreya's face might show a combination of these expressions as she tries to process the question and figure out what it is asking.

3. Searching for Clues:
A confused facial expression can also indicate that Shreya is searching for clues or hints within the question itself. She may be trying to identify any familiar terms or patterns that could help her make sense of the problem.

4. Mental Strain:
When struggling with a challenging maths question, Shreya may experience mental strain and frustration. This can be reflected in her facial expression, which might also show signs of concentration or deep thought.

5. Desire for Assistance:
If Shreya is unable to understand the maths question on her own, her facial expression might also convey a desire for help or guidance. She may look towards her teacher or classmates, hoping that someone can provide clarification or explain the problem to her.

In conclusion, when Shreya cannot understand a maths question, her facial expression is likely to be one of confusion. This expression may include raised eyebrows, a furrowed forehead, a puzzled look, and signs of mental strain. It may also indicate a desire for assistance or guidance in understanding the problem.