文档介绍:: .
45
(10)100-30-7= (17)64+6-40= (4)35+(64-39)=
(11)16+15-7= (18)18+18-20= (5)81-(29+17)=
(12)70-30+33= (19)85+8-12= (6)45+(27-14)=
(13)85-6-19= (20)75-15-20= (7)82-(29+36)=
(14)6+24-30= (1)85-39-28= (8)48+(46-27)=
(15)75-20-30= (2)82-35+29= 59-33-12=
(16)62-5+7= (3)84-(27+38)= 74-62-10=
56
61-44-6= 32-29-1= 80-14+1=
77-54-14= 84-66-17= 79+4+4=
74-17-6= 81-60-13= 45+24+22=
57-33-1= 49-38+5= 34+41+17=
76-71-3= 87+8+3= 98+1+1=
91-49-36= 22+46+25= 12+31+30=
89-60+13= 85+9+5= 90+7+1=
67
2+97+1= 27+21-24= 18+37+13=
43+5+12= 69+16+14= 98+1-12=
27+63+7= 3+83+13= 95+2+2=
63+17+19= 67+10+18= 11+24+58=
72+22+4= 84+15+1= 73+23+2=
55+9+20= 68+17+1= 79+7+6=
90+4+5= 3+36+20= 14+19+27=
78
65-26+20= 69+30-88= 84-43+43=
62-61+30= 52+47-87= 26+24+33=
56+41-52= 49+11-8= 63+35-86=
32+37-3= 92-33+13= 34-19-12=
81-35+29= 82+14-86= 64-61-2=
99-79+6= 42+31-67=