CHAPTER 6 INTEGER NOTE OF INTEGER 1. Integer ... − 8,−7,−6,−5,−4,−3,−2,−1, 0,1, 2, 3, 4, 5, 6, 7, 8 ….
Negative integer Positive integer 2. 0 (zero) is an natural integer 3. Addition and subtraction of integers can be done using the number line. 4. Formula + × + = + − × − = + + × − = − − × + = −
QUESTIONS OF INTEGER 1. Arrange the integers below in increasing order. − 2,5,−3,1,0, −7,5,8
2.
(− 2) + (− 5) =
3.
−
4.
(− 8) + 8 − (− 2) =
10 − (− 3) =
5. 12 + (− 18) − (− 20 ) =
6.
−
9 − (− 5) + (− 2 ) =
7.
−
10 + (3 − 8) =
8.
−
20 + (−12 + 5) =
9. 14 + (− 43 + (− 9 ) + 12 ) =
10. The diagram shows a number sequence. − 19, x, − 15, − 13, y , − 9 Find the value of x + y .