
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Xiaogang's average score for Chinese, Mathematics, and English in an exam is 90. He remembers that his Chinese score is 88 and his English score is 91. What is his Mathematics score?

Present the answer in LaTex format: \boxed{Your answer}
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