文档介绍：89-37= 51-39= 52-27= 63-27=8+23= 57-48= 54+29= 62+19=86-54= 54+28= 27+36= 65-36=84-48= 40-29= 48+48= 60+25=56-28= 78-69= 72-37= 53+28=54+37= 59+19= 55-47= 73+29=98-56= 35+17= 60-38= 36-25=42-19= 75-59= 24+38= 42-23=44+39= 70+19= 16+23= 57-16=62+12= 22+55= 46-28= 48-26=72-54= 16+27= 43-27= 63+25=76-37= 54-29= 79-64= 98-48=56-36= 67-60= 85-50= 42-32=69-31= 93-56= 23+32= 42-19=37-25= 50+22= 62-48= 22+55=86-45= 70-42= 72-54= 16+27=40-12= 83-56= 76-37= 54-29=64+36= 71-55= 56-36= 67-60=55+38= 15+57= 39+38= 93-56=78-29= 37+18= 47+19= 46-19=36+27= 46-38= 65-26= 25+8=45-16= 42-19= 74-18= 44-17=34+58= 53-29= 63+28= 36+17=43-25= 73+14= 36-27= 22+18=52+16= 62-59= 52-34= 82-33=67-28= 84+9= 29+35= 45+9=58-29= 47+18= 47+29= 76-19=46+27= 56-38= 75-26= 45+8=35-16= 42-29= 74-68= 64-17=24+58= 53-39= 43+28= 56+17=63-25= 73+24= 56-27= 22+28=27+16= 62-49= 62-34= 62-35=52-17= 91-37= 36+26= 81-35=77-28= 84+19= 39+35= 35+19=68-39= 47+28= 67+29= 84-29=26+17= 66-48= 85-56= 72+18=45-36= 72-39= 78-39= 74-37=74+18= 83-49= 83+17= 46+27=53-35= 63+34= 64-45= 32+19=53-35= 63+34= 64-45= 32+19=63+37= 64+24= 53+16= 82-37=47+19= 55+38= 40-17= 79-28=54-45= 71-15= 61-39= 85+7=72-45= 46-28= 72-17= 68-57=96-59= 43-27= 76-38= 42+59=56-27= 79-64= 75+17= 60-37=86-58= 85-50= 48-36= 60-37=52+23= 23+32= 53+36= 46-38=35+17= 76-18= 42-37= 75+17=86-45= 55+17= 63-49= 92-59=40-12= 38-16= 42+13= 42-16=63-37= 70-42= 75-55= 62-56=50+22= 83-56= 15+56= 48-26=75-33= 48+35= 38+46= 42-19=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=21+82-60= 36+34-14= 73+12-71= 21+82-60=44-5+12= 100-76+22= 72-45+32= 54-21-18=67-47+22= 21+82+17= 83-27+10= 54+21-18=65-33-18= 68-65-3= 54-52+17= 88-51-24=76-63+1= 63+18+11= 65+15-47= 77-34+55=43-29+13= 85-28-28= 77-38+42= 60-34+35=17+27-