Fill in the blanks and state the property used:
`18 times (-63)="_______" times 18`

Options

A. `-68`, commutative property for multiplication
B. `-63`, associative property for multiplication
C. `-63`, commutative property for multiplication
D. `-73`, distributive property for multiplication over addition

Answer

To solve the question `18 times (-63) = "_______" times 18`, we will use the commutative property of multiplication. Here's the step-by-step solution:

### Step 1: Understand the Commutative Property
The commutative property of multiplication states that changing the order of the numbers being multiplied does not change the product. In mathematical terms, this means:
\[ a \times b = b \times a \]

### Step 2: Apply the Property
In our case, we have:
\[ 18 \times (-63) \]
According to the commutative property, we can switch the order of multiplication:
\[ 18 \times (-63) = (-63) \times 18 \]

### Step 3: Fill in the Blank
Now, we can fill in the blank in the original question:
\[ 18 \times (-63) = (-63) \times 18 \]
So, the answer to fill in the blank is:
\[ -63 \]

### Final Answer
Thus, the complete statement is:
\[ 18 \times (-63) = (-63) \times 18 \]
And the property used is the **Commutative Property of Multiplication**.

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