what are the rules to multiplication with negative numbers and positive numbers?

http://www.mathsisfun.com/multiplying-negatives.html

if the number of negative numbers is odd, then the result is negative. If zero negative numbers, then the result is zero or positive.

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To understand the rules of multiplication involving positive and negative numbers, we should first be aware of the concept of positive and negative numbers.

Positive numbers are greater than zero, while negative numbers are less than zero. Multiplication is the process of combining numbers to find their product.

When multiplying two numbers with the same sign (either both positive or both negative), the result is always positive. For example, if you multiply 2 and 3, the product is 6. Similarly, if you multiply -2 and -3, the product is also 6.

When multiplying two numbers with different signs, the result is always negative. For instance, if you multiply 2 and -3, the product is -6.

To summarize:

- Positive × Positive = Positive
- Negative × Negative = Positive
- Positive × Negative = Negative

Remembering these rules can be helpful in solving problems involving multiplication with positive and negative numbers.