What is special about the number zero? Think about this as you answer the questions below.

1. Copy each problem and calculate each sum:

   $0+3=$ 

   $-7+0=$ 

   $0+6=$ 

   $0+(-2)=$ 

4. Copy each problem and calculate each product:

5. What is special about multiplying by zero? Write a sentence that begins, “When you multiply a number by zero, …”

   Example Answer (e):

   When you multiply a number by $0$, … the result is always $0$.

6. Julia is thinking of two numbers, $a$ and $b$. When she multiplies them together, she gets a product of $0$. Does that tell you anything about either of Julia’s numbers?