文档介绍：20+5= 64-32= 87-72= 88-8= 48-29= 62+26= 86-77= 39-36= 75+24= 51+27= 8+91= 24+43= 57+23+14= 77-28+16= 55+7-12= 42+15-7= 14-8+70= 52+14-4= 34+53= 23-17= 76-65= 72+23= 43+42= 75-14= 40-33= 68+15= 10+32= 76+14= 64-4= 62+32= 56+18+21= 77+15-8= 42-12+19= 43+52-19= 67-51+42= 99-59+34= 83-62= 68-11= 78-15= 69-8= 10+15= 50+16= 98-44= 2+94= 76+4= 65+9= 21+5= 100-56= 62+18-53= 77-21+11= 80+12+3= 53-15-17= 62+19-25= 45-27+18= 29+67= 34-16= 36+49= 39-23= 95-83= 45+13= 82+13= 17+43= 13+55= 93-38= 91-37= 59-54= 74+21-48= 92-49+11= 65-42+19= 57+15+21= 14-8+72= 75-34+18= 73+23= 78-57= 4-1= 95-26= 68-44= 84+1= 57+19= 71-17= 3+67= 39+9= 9+5= 54+46= 56-21-18= 77-21+15= 62-58+13= 75-26-38= 46-18+27= 99-26-26= 90-29= 22+38= 52-11= 89-42= 27-14= 33-9= 44-28= 29+30= 58-8= 8+10= 83-31= 12+7= 74-18-26= 35+18+29= 86-25+17= 45-28+37= 55-29+47= 8+19+27= 50-19= 74-68= 58+16= 18+56= 27+70= 53-4= 79-32= 24+49= 23-10= 20+26= 45-43= 21+35= 42+12-48= 71+26-18= 23+16-8= 52-18+44= 100-56+14= 53-18+40= 34-13= 65-23= 48+7= 27+34= 100-28= 2+55= 89-67= 37+47= 44-31= 5+48= 42+2= 59+3= 62+18-24= 51-16+48= 14+25+37= 52-7+25= 43+15-19= 40-25+18= 96-43= 48-7= 16-14= 92-63= 17+1= 30+41= 48-47= 50+18= 67+12= 53+22= 63+10= 65-21= 16+70= 59-38= 23+24= 46-29= 23-6= 8+72= 12+58= 80-6= 9+54= 99-45= 68-6= 51-49= 26+18-7= 53-48+67= 42+26-44= 56+14-36= 75+25-18= 42-18+36= 7+5= 59-5= 32-1= 2+75= 81+18= 92-83= 95-75= 24-3= 39-13= 17+3