Simplify :
`(i) (-7) + (-9) + 12 + (-16) " " (ii) 37 + (-23) + (-65) + 9 + (-12)`
`(iii) (-145) + 79 + (-265) + (-41) + 2 " " (iv) 1056 + (-798) + (-38) + 44 + (-1)`

Simplify : (i) 8 x (-13) + 8 x 9 (ii) (-12) x 7 + (-12) x (-4) (iii) 9 x (-16) + (-12) x (-16) (iv) 10 x (-31) + 10 x (-9)

Simplify: (-1+(7)/(-9))+(11)/(12)

Simplify : (i) (-24) xx (68) + (-24) xx 32 (ii) (-9) x 18 - (-9) x (8) (iii) (-147) div (-21) (iv) 16 div (-1)

Simplify: (i) 7/18 + 5/6 , (ii) (-9/25) + 3/5 , (iii) (-8/35) + (-2/7)

Fill in the blanks : (i) (-3) + (-9) = ……. (ii) (-7) + (-8) = ….. (iii) (-9) + 16 = ….. (iv) (-13) + 25 = ….. (v) 8 + (-17) = ……….. (vi) 2 + (-12) = ……….

Simplify: (i) 4/9-:2/3 (ii) 3 3/7-:8/(21) (iii) 15 3/7-:1(23)/(49)

Simplify: (i) 5/12 xx (-36) , (ii) -17/18 xx 12 , (iii) -5/6 xx 6/5 , (iv) -14 xx 9/28 , (v) -12/5 xx (-15) , (vi) -3/4 by 8/7 , (v) -16/9 by 12/-5 , (vi) 35/(-8) by 12/(-5) (vii) -3/10 by -40/9 , (viii) -32/5 by 15/(-16) , (ix) -8/15 by -25/32

Simplify 5/9-7/12+1/2

Simplify : (i) (-2)/3+5/9-(-7)/6 (ii) 5/(12)+(-5)/(18)-7/(24)