Class 7 - Mathematics - Properties of Integers
1. Closure Property Under Addition
Integers are closed under addition, i.e. for any two integers,a and b, a+b is an integer.
eg: 3 + 4 = 7
-9 + 7 = 2
2. Closure Property under Subtraction:
Integers are closed under subtraction, i.e. for any two integers,a and b, a-b is an integer.
eg:
-21 -(-9) = -12
8 -3 = 5
3. Closure Property under Multiplication:
Integers are closed under multiplication, i.e. for any two integers,a and b, ab is an integer.
e.g.
5 × 6 = 30
-3 × -8 = 24
-3 × 7 = -21