Find the Missing Sign in Expression: 98-20□18+60

To solve this problem, we need to determine which operator between $=$, $<$, or $>$ makes the mathematical expression $98 - 20 \Box 18 + 60$ valid. Let's perform each step carefully.

First, we'll compute both sides of the expression:

• Calculate the left expression: $98 - 20 = 78$.
• Calculate the right expression: $18 + 60 = 78$.

Now, let's compare the results. We have $78$ on the left and $78$ on the right:

Since $78 = 78$, the correct operator to use is $=$.

Therefore, the expression is correctly written as:

$98 - 20 = 18 + 60$

Thus, the correct sign is $=$.