Students can go through AP 6th Class Maths Notes Chapter 6 Integers to understand and remember the concepts easily.
Class 6 Maths Chapter 6 Notes Integers
→ We use negative numbers to represent debit account, temperature below 0°C, past periods of time, depth below sea level, water level in lake, level of oil in tank etc.
→ The collection of positive numbers 1, 2,3, ……… , negative numbers -1, -2, -3, ……… and zero put together is called integers.
Set of integers is denoted by the letter I or Z.
∴ Z = {…….. -3, -2, -1, 0, 1, 2, 3, ………..}
The numbers on the left of the zero are called negative numbers. They are less than zero.
The numbers on the right of the zero are called positive numbers. They are greater than zero.
→ We can show the addition and subtraction of integers on the number line.
→ When two positive integers are added, we get a positive integer.
→ When two negative integers are added, we get a negative integer.
→ When one positive and one negative integer are added we subtract them and put the sign of the bigger integer.
→ The subtraction of integers is the same as the addition of their additive inverse.
→ Number line
