Solve: 72+0?74-0 Finding the Missing Decimal Digit

To solve this problem, we need to evaluate the expression $72 + 0?74 - 0$. This involves assessing the values involved and determining the relationship between parts of the expression.

We begin by considering the meaning of the expression logically. The expression $72 + 0$ simplifies to $72$ because adding zero does not change the number. Similarly, the expression $74 - 0$ simplifies to $74$ because subtracting zero does not change the number.

Hence, the expression to evaluate becomes comparing $72$ and $74$.

To determine the relation between $72$ and $74$, we note that $72$ is less than $74$ because when counting, $72$ comes before $74$.

Therefore, the correct relationship between these numbers is $72 < 74$, represented by the symbol $\lt$.

Therefore, the solution to the problem is $<$.