文档介绍：45+15X6=250+5X8=6X5+2X4=30X3+8=400+4+20X5=10+12+3+20=80+20+80+4=70+100-10X5=360+40=40X20=80-25=70+45=90X2=X6=300X6=540+970=
18-64+8=
36X11=
4200-2200=
56+14=
42+6+20=
1025+25=
220+80=
65+13=
40-5X7=
336+70=
20X8X5=
75+15=
80+60+3=
25X9X4=
600-3X200=
0+24=
41+18+2=
200-33X3=
20+20+2=
200+25
75-11X5=
3020-1010=
35-25+5=
800+16
42+7-29=
12X50=
36+8-40=
840+21
5600+80=
25X8=
2800+40=
560+14
25X16=
23X11=
98+14=
390+13
120X25=
25+25=
96+24=
600+15
85-17=90-15=96-16=78-26=51-17=80-40=100-20=100-4=300-60=
64+2=
64-4=
50-5=
60-8=
96-4=
90-6=
400+80=
400-80=
240-40=
5X18=26X4=7X15=32X30=40X15=60X12=23X30=30X50=5X700=
400-80=48-16=96+24=160X5=4X250=OX518=10X76=36X10=15X6=
45+15X6=250+5X8=6X5+2X4=30X3+8=400+4+20X5=10+12+3+20=80+20+80+4=100-10X5=360+40=40X20=80-25=70+45=90X2=16X6=300X6=540+9=30X20=400+4=350-80=160+70=18-64+8=42+6+20=40-5X7=80+60+3=41+18+2=75-11X5=42+7-29=5600+80=25X16=120X25=36X11=1025+25=336+70=25X9X4=200-33X3=3020-1010=12X50=25X8=23X11=125+25=
4200-2200=
56+14=
72+24=
920+4=
220+80=
65+13=
85+17=
300+60=
20X8X5=
75+15=
90+15=
64+2=
600-3X200=
120+24=
96+16=
64+4=
20+20+2=
200+25=
78+26=
50+5=
35-25+5=
800+16=
51+17=
60+8=
36+8-40=
840+21=
80+40=
96+4=
2800+40=
560+14=
100+20=
90+6=
98+14=
390+13=
100+4=
400+80=
96+24=
600+15=
240+40=
400-80=
400-80=48-16=96-24=160X5=4X250=800-16=840-21=560-14=390-13=
72-24=85-17=90-15=96-16=78+26=51-17=80-40=100-20=100-4=
400-80=40X80=400+8048-16=96-24=160X5=4X250=OX518=OX76=36X10=
240-40=920-4=300+60=64-2=64-4=50-5=60-8=96-4=90-6=400+80=
15X6=
16X6=
80+60+3=
25X9X4=
24X3=
300x6=
41+18+2=
200-33X3=
5X18=
540+9=
75-11X5=
3020-1010=
26X4=
30X20=
42+7-29=
12X50=
7X15=
400+4=
5600+80=
25X8=
32x30=
350-80=
25X16=
23X11=
40X15=
160+70=
20X25=
125+25=
60x12=
18-64+8=
36X11=
4200-2200=
23x30=
42+6+20=
1025+25=
220+80=
90x2=
40-5X7=
336+70=
20X8X5=