CHAPTER 1 DIRECTED NUMBERS1.1 Multiplication and Division of
Integers.MultiplicationDivision1. 5 x 3 = 151. 6 3 = 22. 5 x (-3) =
-152. 6 (-3) = -23. (-5) x 3 = -153. (-6) 3 = -24. (-5) x (-3) =
154. (-6) (-3) = 25. (-5) x 0 = 05. (-6) 0 = undefined6. 5 x 0 =
06. 0 (-6) = 07. 0 0 = undefined
1.2 Combined operations on Integers.1. Order of arithmetical
operations.( ) , , x , + ,
Example:(a) 11 22 + 33(b) 12 x (-3) (-6) = =
1.3 Positive and Negative Fractions.1. Number line
01 - - - -1
Positive FractionsNegative Fractions
ZeroExample:i) (-8 ) + 3 ii) (-3 ) x 5 = =
iii) 5 (-3 )iv) (-3 ) 5 = =
1.1 1.2 1.3 1.4 Positive and Negative Decimals.
0.50.40.30.20.10-0.1-0.2-0.3-0.4-0.5
Positive DecimalsNegative Decimals
Zero
1.5 Computation involving directed numbers.i) 0.75 + (- )ii)
-2.5 (- ) = =
iii) [ 36 + 5 x (-4)] (-8) =
