Integers (…-3, -2, -1, 0, 1, 2, 3…) is the extended form of positive numbers (1, 2, 3,…) which are the image of positive numbers if a mirror is at zero. In the system of integers, subtraction operation can be performed. Students start integers section with adding and subtraction positive and negative numbers. Similarly, they multiply and divide positive and negative numbers. At the last, they simplify positive and negative numbers with combined four mathematical operations addition, subtraction, multiplication, and division.
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