[" (iii) "(-5)+(-8)+(-11)+cdots+(-3)],[" (iv) "5+(-41)+9+(-39)+13+(-37)+17+...+(-5)+81+(-3)],[]

Add the following rational numbers : (i) (12)/(7) and (3)/(7) : (ii) (-2)/(5) and (1)/(5) (iii) (3)/(8) and (1)/(8) (iv) (-5)/(11) and (7)/(-11) (v) (9)/(-13) and (-11)/(-13) (vi) (-2)/(9) and (5)/(9) (vii) -(17)/(9) and (-11)/(9) (viii) (-3)/(7) and (5)/(-7)

Find the sum of the following series : 5+(-41)+9+(-39)+13+(-37)+17+....+(-5)+81+(-3)

Evaluate: (i) 5/6-7/8 , (ii) 5/12 -17/18 , (iii) 11/15 - 13/20 , (iv) -5/9 - (-2/3) , (v) 6/11 -(-3/4) , (vi) -2/3 -3/4

11, 13, 17, 19, 23, 29, 31, 37, 41, ...

Evaluate: -3/8 + 5/8 + 7/8 , (ii) 11/3 + -5/3 + -2/3 , (iii) -1+ 2/(-3) + 5/6 , (iv) 7/26 + (-11)/13 + 2 , (v) 3+(-7/8) + -3/4 , (vi) -13/8 + 7/16 + (-3)/4

Add the following rational numbers: (i) 5/11 and 4/11 , (ii) -3/8 and 5/8 , (iii) -6/13 and 8/13 , (iv) -8/15 and -7/15 , (v) -13/20 and 17/20 , (vi) -3/8 and 5/(-8)

Which of the two rational numbers is greater in each of the following pairs? (i) 3/-7 or 1/7 , (ii) 11/(-18) or -5/18 , (iii) 7/10 or -9/10 (iv) 0 or -3/4 , (v) 1/12 or 0, (vi) 18/(-19) or 0 (vii) 7/8 or 11/16 , (viii) 11/-12 or -10/11 , (ix) -13/5 or -4 (x) 17/(-6) or -13/4 , (xi) 7/(-9) or -5/8 , (xii) -3/(-8) or 5/9

3(5a-7)-2(9a-11)=4(8-13-1)

8, 43, 11, 41, ?, 39, 17