1. Find each of the following products:
(a) 3 × (–1) (b) (–1) × 225
(c) (–21) × (–30) (d) (–316) × (–1)
(e) (–15) × 0 × (–18)
(a)
(b)
(c)
Product of two negative integers is a positive integer
(d)
(e)