1. The problem asks to rewrite the number $2.09 \times 10^2$ as a whole number or decimal. 2. The expression $2.09 \times 10^2$ means $2.09$ multiplied by $10$ raised to the power of $2$. 3. Recall that $10^2 = 100$. 4. So, multiply $2.09$ by $100$: $$2.09 \times 100 = 209$$ 5. Therefore, $2.09 \times 10^2$ rewritten as a whole number is $209$. Final answer: $209$