Solve Addition Problem: 85 + 5 Units

To solve this problem, let's follow these steps:

• Step 1: Identify the numbers involved in the addition.
• Step 2: Perform the addition operation.
• Step 3: Verify the final result with the given choices.

Now, let's work through each step:

Step 1: The given numbers are 85 (the base number) and 5 (the number to add).

Step 2: We'll perform the addition, $85 + 5$.

Performing the calculation:
$85 + 5 = 90$

Step 3: Among the listed answers, the choice that corresponds to our result is choice 2: $90$.

Therefore, the number we get by adding 5 to 85 is $90$.