Compare Absolute Values: Are |-3| and |3| Opposite Numbers?

To determine if the numbers are opposites, consider the following:

• Step 1: Calculate the absolute values:
  • $\left|-3\right| = 3$
  • $\left|3\right| = 3$
• Step 2: Evaluate whether these numbers are opposites.

For two numbers to be opposites in a mathematical context, they must be equidistant from zero on the number line but in opposite directions. Since both calculations give us $3$ and $3$, they are the same numbers, not opposites.

Therefore, the answer to the question is No.