1. **State the problem:** Find the product of the given multiplication problems. 2. **Recall the multiplication rules:** - Multiplying a positive number by a negative number results in a negative number. - Multiplying two positive numbers results in a positive number. - Multiplying two negative numbers results in a positive number. 3. **Solve each problem:** **a)** $(3) \times (-5)$ $$3 \times (-5) = -15$$ **b)** $6 \times 4$ $$6 \times 4 = 24$$ **c)** $(-5) \times (-10)$ $$(-5) \times (-10) = 50$$ 4. **Final answers:** - a) $-15$ - b) $24$ - c) $50$