Exercises on addition of positive and negative numbers I need it urgently,

Exercises on addition of positive and negative numbers I need it urgently,

5+(-8) -7+(-8) 5-(-12) 15-(-8) 50+(-18)-7-(-5) -71+(-5) -17+(-5) -711+(-5) -227+(-115)12+(-3) 124+(-3) 12-(-113) 12-(-314) 25-12+(-3)-25+(-13) 25-12-(-3) 215+124+(-3) 245-152-(-63)