Final answer:
When multiplying positive and negative decimals, the product will be positive if both decimals have the same sign, and negative if one decimal is positive and the other is negative.
Step-by-step explanation:
When multiplying positive and negative decimals, you can follow the rules for multiplying positive and negative numbers:
- If both decimals are positive or both are negative, the product will be positive.
- If one decimal is positive and the other is negative, the product will be negative.
For example, if you multiply 0.2 and -0.4, the product will be -0.08. Similarly, if you multiply -0.3 and -0.5, the product will be 0.15.