文档介绍：78-29= 37+18= 47+19= 46-19= 76-18= 36+27= 46-38= 65-26= 25+8= 55+17= 45-16= 42-19= 74-18= 44-17= 38-16=
34+58= 53-29= 63+28= 36+17= 53+16= 43-25= 73+14= 36-27= 22+18= 40-17= 52+16= 62-59= 52-34= 82-33= 61-39=
32-17= 91-17= 36+16= 91-25= 40+13=
67-28= 84+9= 29+35= 45+9= 72-17=
58-29= 47+18= 47+29= 76-19= 78-39=
45+8= 75+17= 35-16= 42-29= 74-68= 64-17= 48-36= 24+58= 53-39= 43+28= 56+17= 53+36= 63-25= 73+24= 56-27= 22+28= 42-37= 27+16= 62-49= 62-34=
62-35= 63-49= 52-17= 91-37= 36+26= 81-35= 42+13= 77-28= 84+19= 39+35= 35+19= 82-37= 68-39= 47+28= 67+29= 84-29= 79-28= 26+17= 66-48= 85-56=
72+18= 85+7= 45-36= 72-39= 83-49= 83+37= 46+27= 42+59= 53-35= 63+34= 64-45= 32+19= 60-37= 72+26= 52-37= 54-35= 89-37= 51-39= 52-27= 63-27=
63+37= 61-26= 48+23= 57-48= 54+29= 62+19=
47+19= 42-17= 86-54= 54+28= 27+36= 65-36= 54-45= 35+27= 84-48= 40-29= 48+48= 60+25= 72-45= 46-38=
56-28= 78-69= 72-37= 53+28= 96-59= 75+17= 54+37= 59+19= 55-47= 73+29= 56-27= 92+59= 98-56= 35+17= 60-38= 36-25= 24+38= 42-23= 52+23= 63-37=
44+39= 70+19= 16+23= 57-16= 63-2=
12+29-19= 69+10-36= 27+12-28= 67+27-37=
33-17+15= 75-36+10= 72-54+12= 65-39-15=
62-18+24= 54+21+18= 53-29+19= 35+12-28=
86-12-15= 57-33+31= 36-27+9= 77-19-16=
88-34+18= 85-36+27= 12+79-62= 51-27+28=
51-42+53= 77-65-6= 71-52+36= 75-24+26=
75+24-23= 32+45-38= 81-45+36= 24-16+40=
63+12-42= 53-37+15= 63-23+28= 48-26+18=
35+17= 50+22= 6