e) \( -20 \cdot 3-80: 20= \)

Let's break it down! First, we handle the multiplication: \( -20 \cdot 3 = -60 \). Next, we do the division: \( 80 : 20 = 4 \). Finally, we combine these results: \( -60 - 4 = -64 \). So, the answer is \( -64 \)! Math can sometimes feel like a puzzle, and each step is like putting together a piece. The key is to follow the order of operations: multiplication and division before addition and subtraction. It’s a game of numbers where staying organized makes all the difference!