NCERT Class 7 Solutions: Integers (Chapter 1) Exercise 1.3–Part 1
Q1 Find the each of the following products:
Solution: When multiplying the numbers some of which are negative, do the multiplication without accounting for sign. Then put the sign on the result according to following rules:





Zero property of multiplication: Also called the zero product property. There exists a unique number, zero, such that the product of any real number x and 0 is always equal to 0





Q2 Verify the following:
Solution:

Hence

Hence