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1、426 =400+ 50=38+ 26=93- 8=497 =6X9 =56-30=355 =27+ 25=279 =53+8=4X9 =8-2 =328 =81 =9X9 =84+7=80-44=1800-900=420+80=500-60=89- 8=24-4 =7+ 63=9X4 =366 =9X7 二568 =28+ 6=7X5 =36+ 4 二305 =63 9 =64 8 =38 + 16=455 =71 =25+ 23=12+ 35=27+ 71 =46 + 33=40 8 =21 +15=36+ 22=59+ 18=72+ 24=41- 2944-9=72+ 16=43+ 32

2、=35- 8=567 =8X2 =7+ 56=567 =126 =4X2 =21-7=7X3 =8 8 =324 =80- 9=42 7 =35- 6=287 =21-36 4 =182 =637 =9X6 =9X9 =46+ 10=65+ 40=81 9 =55- 20=9+ 46=9 3 =9-9 =58+ 32=80- 28=33+ 60=546 =408 =61- 13=15-5 =9X3 =42- 15=189 =180- 60=72-40=47+ 8=14+ 85=61 + 27=170+ 20=5X9 =7X7 =73+ 16=60+ 300=105 =83-29=5X6 =43

3、- 17=21 + 27=328 =30-6 =364 =648 =51 =15 3 =16 8 =34+9 二42-6=24X0 =43-30=35-7 =14-7 =7+44=27-9 =9-1 =19+41=5+58=42-7 =53+8=7-7 =7X8 =64-8 =64 - 8=4X9 =96-42=73-4=6X3 =21-3 =8-2 =58-36=72-8 =9X9 =4X8 =32-8 =5X7 =64 一 8=72-8 =54-9 =8-1 =72-9 =24X0 =78+15=49-7 =9X9 =36-6 =510+200=83 - 20=42-7 =84+7=81

4、-9 =7+1X8 =43 - 30=35-7 =80-44=42+13=130+80=9-1 =19+41=420+80=24-3 =46 - 8=7-7 =130+80=500-60=24+8=8X 5-7=96 - 42=46 - 8=89- 8=27- 3=9X 3-8=58 - 36=8X 5-7=64 - 8=42+13=30-6 =5X7 =9X 3-8=34+9=42-6=36-4 =72-9 =30-6 =14-7 =7+44=24-4 =36-6 =36-4 =5+58=42-7 =7+ 63=81 -9 =1800+200=64-8 =64 8=9X4 =42+13=93

5、-80=6X3 =21-3 =36-6 =24-3 =7X8 =9X9 =4X8 =9X7 =24+8=73-4=72-8 =54-9 =56-8 =27-3=72-8 =78+15=49-7 =28+ 6=42+13=64 8=83-20=42-7 =7X5 =36+ 4 二7+ 56=9-3 =83-29=36-6 =30-5 =567 =9-9 =5X6 =9X7 =63-9 =12-6 =58+ 32=43- 17=56-8 =64-8 =4X2 =80-28=21 + 27=28+ 6=38+ 16=21-7=33+ 60=32-8 =7X5 =45-5 =7X3 =54-6 =30

6、-6 =36+ 4=7-1 =8-8 =40-8 =36-4 =30-5 =25+ 23=32-4 =61-13=64-8 =63-9 =12+ 35=80- 9=15-5 =5-1 =64-8 =27+ 71 =42-7 =9X3 =15-3 =38+ 16=46 + 33=35- 6=42-15=16-8 =45-5 =40-8 =28-7 =18-9 =42-6 =7-1 =21 + 15=21-3 =180-60=400+ 50=25+ 23=36 + 22=3&4 =72-40=38+ 26=12+ 35=59 + 18=18-2 =47+ 8=93- 8=27+ 7172 + 24

7、=63-7 =14+ 85=49-7 =46+ 33=41 - 29=9X6 =61 + 27=6X9 =40-8 =44-9=9X9 =170+ 20=56-30=21+ 15=72 + 16=46+ 10=5X9 =35-5 =36+ 22=43 + 32=65+ 40=7X7 =27+ 25=59+ 18=35-8=81 -9 =73+ 16=24-4 =72+ 24=56-7 =55-20=60+ 300=7+ 63=41-29=8X2 =9+ 46=10-5 =9X4 =44-9=72+ 16=46+ 10=5X9 =35-5 =36+ 22=43 + 32=65+ 40=7X7 =

8、27+ 25=59+ 18=35-8=81 -9 =73+ 16=24-4 =72+ 24=56-7 =55-20=60+ 300=7+ 63=41-29=8X2 =9+ 46=10-5 =9X4 =44-9=7 + 56=9-3 =83- 29=36-6 =72+ 16=56-7 =9-9 =5X6 =9X7 =43+ 32=12-6 =58+ 32=43- 17=56-8 =35- 8=4X2 =80- 28=21 + 27=28+ 6=56-7 =21-7=33+ 60=32-8 =7X5 =8X2 =7X3 =54-6 =30-6 =36+ 4=7+ 56=8-8 =40-8 =3&4

9、 =30-5 =56-7 =32-4 =61-13=64-8 =63-9 =12-6 =80-9=15-5 =5-1 =64-8 =4X2 =42-7 =9X3 =15-3 =38+ 16=21-7=35-6=42-15=1&8 =45-5 =7X3 =2&7 =18-9 =42-6 =7-1 =8-8 =21-3 =180- 60=400+ 50=25+ 23=32-4 =36-4 =72-40=38+ 26=12+ 35=80- 9=47+ 8=93- 8=27+ 71 =42-7 =63-7 =14+ 85=49-7 =46+ 33=35- 6=9X6 =61 + 27=6X9 =40-

10、8 =2&7 =9X9 =170+ 20=56- 30=21+ 15=21-3 =364 =180-60=400+ 50=16 4X8 =46 - 8=182 =72-40=38+ 26=8 一 4+48=8X 5-7=637 =47+ 8=93- 8=25 - 5+36=9X 3-8=9X6 =14+ 85=497 =6X8 - 42=30-6 =4X2 =61 + 27=6X9 =2X8-4=364 =9X9 二170+ 20=56- 30=8X 9 9 =4X 5+44=46+ 10=5X9 =355 =36 - 6 3 =48 - 8+7=65 + 40=7X7 =27+ 25=9-9

11、X6 =1800+200=81-91273+ 16=279 =42 7X6 =93- 80=55 - 20=60+ 300=53+8=96-80+7=6X 5+37=9+ 46=105 =4X9 =64-40-8=10-8-1 =9 3 =83-29=8-2 =40-4+20=7X8 =9-9 =5X6 =328 =7X 5-8=73-4=58 + 32=43- 17=81 =14 - 7+25=3X8 4=80 - 28=21 + 27=9X9 =15- 5+8=7X 6+10=33 + 60=328 =84+7=8X 9-8=728 =546 =30-6 =80-44=1 X2+20=8-

12、2 =40- 5=364 =147 =54 - 6+33=328 =61 - 13=648 =4X32=510+200=4900- 1800=15-5 =51 =6-3X7=15-459 =20+80=9X3 =153 =8-4X3=11-40-8 =430+1000=42-15=168 =6X 5+37=7+1X8 =500-60=189 =426 =12-4+18=130+80=89- 8=64 一 8=9X7 =43+ 32=46+ 10=5X9 =34+9 二56-8 =35 - 8=65+ 40=7X7 =14-7 =28+ 6=56-7 =81 -9 =73+ 16=5+58=7X

13、5 =8X2 =55 - 20=60+ 300=64-8 =36+ 4=7+ 56=9+ 46=10-5 =6X3 =30-5 =56-7 =9-3 =83 - 29=9X9 =63-9 =12-6 =9-9 =5X6 =72-8 =64-8 =4X2 =58+ 32=43 - 17=78+15=38+ 16=21 7=80- 28=21 + 27=83 一 20=45-5 =7X3 =33+ 60=32-8 =43 30=7-1 =8-8 =5牛6二30-6 =9-1 =25+ 23=32-4 =40-8 =36-4 =280+450=12+ 35=80- 9=61 13=64-8 =7-7

14、 =27+ 71 =42-7 =15-5 =5-1 =3600+5800=46+ 33=35 - 6=9X3 =15-3 =8X 9+21 =40-8 =2&7 =42 - 15=16-8 =730- 190=21+ 15=21-3 =1 &9 =42-6 =3700 一 370=36+ 22=36-4 =180- 60=400+ 50=85+55=59+ 18=18-2 =72 - 40=38+ 26=24-4 =72+ 24=63-7 =47+ 8=93 - 8=7+ 63=41 29=9X6 =14+ 85=49-7 =9X4 =44 9=4X2 =61 + 27=6X9 =36-6 =

15、72+ 16=9X9 =170+ 20=56 - 30=35-5 =68+13=69+21=71-26=34-28=27+ 25=32+18=28+54=72-25=50-32=27-9 =65+56=39+28=40-19=92-47=53+8 二28+16=19+62=72- 7=41-72=4X9 =6+16=58+32=77-22=82-16=8-2 =54+18=43+28=91-65=85- 57=32-8 =46+7=18+23=49-40=21-15=8-1 =46+37=43+8=45-30=53- 35=9X9 二24+8=36+15=62- 7=44-44=84+7=36

16、+48=29+35=81-3=32-23=80 - 44=25+37=25+37=74 - 21 =40-28=18-900=86+7=54+7=90- 9=43- 26=27+23=52+18=34+9=77-39=37-21 =64+28=26+8=24+16=30- 12=46-17=23+49=5+39=58+34=50-36=65-47=24+57=72+9=42+9=64-38=74- 47=34+58=15+38=29+27=28-19=81-13=26+8=25+16=19+35=35-19=65- 32=37+5=53+39=68+12=62-59=72-67=77+5=58

17、+27=27+28=50-42=65- 19=58+8=46+27=53+27=54-37=77-19=26+57=25+37=70- 3=71-33=55- 28=4+18=66+17=81-18=72-28=41-27=92 - 68=32-26=78-19=8-2 =20-4 =62 - 57=62-29=26+28=24-4 =15-3 =60 - 22=42-27=52+29=4X4 =10-5 =70 - 21 =95-57=55+17=20-4 =5-1 =88-9=67- 7=74-15=24-6 =18-6 =44-19=8+20=54-48=2X5 =30-6 =66 -

18、38=2+30=88-28=6X9 =4X5 =71 - 28=94-4=81-34=2X9 =6X3 =5+40=6+50=35+ 36=9X4 =16-4 =70+1 =70+8=44-15=8-2 =25-5 =54-4=48-19=3X6 =10-5 =36-6 =30-18=37- 7=18-3 =9-3 =5+ 1 =13+60=2+50=18-6 =5X6 =12-2 =36-17=26+58=15-3 =49-7 =42-6 =4+40=65+19=6-3 =18-6 =24-3 =17+48=52-28=25-5 =6-2 =2X6 =60+3=35+26=20-5 =6-2

19、 =6X6 =76-6=8+70=5-5 =12-2 =25-5 =87-19=23+719=30-6 =2X7 =12-4 =60+3=32+87=9-3 =15-5 =3X8 =70+9=32-26=4X3 =30-5 =15-5 =56 - 28=85-58=16-4 =24-6 =33- 9=49+3=24+28=12-4 =1 &4 =18-3 =8+ 72=45+5=90-45=8-4 =2X3-6=3X6 =1 -1 =24-4 =56-8 =42-7 =42-5=5X5 =15-5 =36-9 =45-9 =20-5 =72-8 =27-9 =3X 6-6 =30-6 =50

20、- 27=9-9 =9X9 =45-5 =49-7 =10-5 =24-8 =72-9 =6-6 =9X2 =26 + 7=14-7 =3X4-2=12-6 =56-7 =183 =6-1 =36-4 =1X4 =64-8 =18+ 6=15-3 =5-5 =24-6 =30-5 =3X6-2=56+41=1X8 =63-7 =20+ 4=4-2 =56-7 =24-8 =8X5 - 8=5+ 67=6X2 =16-2 =36-6 =4X3 =4X9 =6-2 =42-6 =4&6 =16-8 =18+23=10-5 =4X6-8=72-8 =43+8=70 - 52=5X1 =54-6 =2

21、X7 =36+15=49-7 =45-39=7-7 =9-9 =29+35=10-2 =3X6-3=5-1 =27-9 =25+37=54-6 =24-6 =1X6 =5X7 =54+7=20-4 =56-7 =56-8 =1 &9 =34+9=4X9-6=36-6 =21-7 =8X3 =24+16=21-3 =24-3 =2&7 =81-9-3 =58+34=3X6 =4X5 =7X3 =72-9 =42+9=9-3 =27-3 =35-7 =81 -9 =9-1 =1X5 =23+17=30-6 =36-6 =18-9 =48-8 =16-2-4 =7X3 =9X5 =1X1 =2X7

22、=42-6 =9X9 =35-7 =42-6 二4X8 =1X9 =16-4 =27-3 =24-8 =2X6-4 =54-9 =7X7 =4-4 =364 =7X6 =6X3 =28-7 =56-8X963-7 二12-2 =3X1 =40-8 =36-9 =19 - 2X4 =4X9 =9X6 =6X6 =42-7 =2X5 =12-4 =6X4 =63 9X4 =12-3 =54-6 =5X8 =4X4 =7X4 =5X9 =2X8 =6-3 =6X5 =9-1 =20-4 =20-4 =7X9 =27-9X7 =7X8 =5X7 =4X7 =63-7 =8X1 =24-6 =9X8 =

23、49-7 二32-8 =54-6 =7X5 =18-3 =10-2 =40-8X5 =7-1 =24-3 =8-1 =30-6 =2-1 =8X8 =81 -9 =1 X6X83X7 =5X3 =63-7 =3X6 =9-9 =3X 8+40=2X6 =8X9 =25+41=16-2 =45-9 =64-8 =8X5 =56 7X6 =71-68=9X4 =3X3 =40-8 =14-2 =6-1 =5X6 =5X4 =9X3 =35-7 =15-3 =6X2 =3X2 =54 - 9X3 =63+24=9X3 =32-8 =16-8 =6X9 =9X2 =45+45=5X2 =486 =42

24、+36=8 1 4 =255 =639 =284 =5X5 =819 =3X6 =25+41=147 =4X3 =90- 65=4X5 =41+25=4X7 =35-7 =4X9 =36+24=122 =78 - 19=3X8 =12-4+9=1 1 =5X5 =72-8 =81 一9 =8X218-9 =27-9 =27-3 =3X427 - 9X95 1 =4X3 =153 =182 =8X6 =4-2 =6X2 =6- 2 =426 =64 9X2 =8 4 =5X9 =66+26 二5X 5+52=72-8 =9X8 =52+35=8 4 =14- 2 =6X2 =6-2 =49 7

25、二102 =54 6X4 =279 =204 =3X6 =306 =15- 5 =497 =9X4 =9 3 =9X7 =42 6 X6 =244 =189 =9X9 =729 =2X2 =30-6 =142 =7X8 =35 5 =5X 6+41=80- 46=105 =426 =7X2 =182 =65+26=5X6 =36 9 =6X4 =54 一 63 =8 8 =4X8 =75 - 64=2X1 =8 8 =324 =85 - 62=20 5 =6X5 =40- 5-2 =16 8 =50+40=21- 3 =5X8 =287 =5X4 =248 =6X7 =355 =4X9 6=2

26、1-7 =3X8 =8-2 =4X8 =305 =183 =49-7 =8X4 =4X2 =14-7 =30X4 =45-6=24-4 =48 6X4 =6-6 =581 +12=10-2 =8X7 =35-5 =63+24=400X5 =3X6 =16-2 =21-7 =42-7 =45-3 =9-3 二4X 8+52=3X8 =5X2 =51 + 31 =8X6 =24-6 =8-2 =56-7 =13X3 =4-1 =3X7 =4X1 =3X7 =60-4 =9X 9+12=8-8 =18-3 =12-2 =120-50=72-9 二32-4 =8X9 =4X 9+40=300- 64=

27、4X5 =3X5 =2&4 =75+21=64X 10=36-4 =6-3 =9X1 =69 - 57=6+6X7=45-5 =3X9 =8-1X8 =49+37=400X5 =39+45=63-9 =3X6 =81 25=50- 31 =30-6 =4X9 =2&7 =40-8 =425X0 =42-7 =25-5X8 =24-8 =25X3 =528-0=10-5 =6X5 =3X9 =268+125=450+ 80=4X2 =30-5 =20-5 =280+40=57+140=18-2-3 =6X6 =4X1 =66-22=800X2 =9X5 =40-5 =12-3 =46 X 20=

28、3000-400=14-2 =8X7 =4X9 =85-42=420-7 =4X6 =16-8 =81 -9 =90- 31 =6X 80+ 20=15-5 =36+42=5X 7-20=60X9 =420-330=21-3 =21-3 =25+41=55+ 41 =5X 28=60X5 =8X 6+ 7=85+247=700X3 =1803 =17X3 =522+23=310X3 =310X3 =200X8 =212+88=6X42=200X5 =3005 =530- 70=630-9 =120X4=320X2 =80X5 =850X2 =3507 =80X5 =660-6 =6000+40

29、00=263-80=700X2 二40X5 =700X2 =5000-500=8502 =18X4 =15X 5+ 5=80X3 =8600-600=98+ 26X0 =320X3 =600- 50=70+ 550=1300-500=102X2 =60X 15=56X2 =800X6 =600X4 =700X3 =72-6 -2 =200-36=500X4 =59+42=310X3 =400X3 =15+5X3 =5409 =87- 38=3005 =8 + 2X 20 =380+50=14X5 =43X7 =80X5 =22 + 40=789+ 0=350- 80=245X9 =6000+4

30、000=7X 8-7=3005 =570+ 50=309X5 =5000-500=568 =15X 4+ 8=23X3 =490X5 =8600-600=380-190=680X0 =1803 =70+ 550=1300-500=400X6 =40X 25=200X8 =800X6 =600X4 =50 - 23=6 X 6+6=530- 70=500X4 =59+42=35X0 =436-24=850X2 =5409 =87 - 38=40X6 =111X9 =263- 80=14X5 =43X7 =300X6 =120X3 =8502 =350- 80=245X9 =7+3X4=360+8

31、0=98+ 26X0 =570+ 50=309X5 =90 - 26=300X7 =102X2 =23X3 =490X5 =75+21=64X10=72-6-2 =200- 36=400X3 =69 - 57=6+6X7=400X3 =15+5X3 =8+ 2X 2049+37=400X5 =8+ 2X 20 =380+50=22+ 40=81 25=50- 31 =22+ 40=789+ 0=7X 8-7=40-8 =425X0 =7X 8-7=300-5 =56-8 =25X3 =528- 0=56-8 =15X 4+ 8=380-190=268+125=450+ 80=380-190=6

32、80X0 =400X6 =280+40=57+140=400X6 =40X 25=50-23=66 - 22=800X2 =50-23=6 X 6+6=35X0 =46 X 20=3000-400=35X0 =436-24=40X6 =85 - 42=420-7 =40X6 =111X9 =300X6 =90-31 =6X 80+ 20=300X6 =120X3 =7+3X4=60X9 =420-330=7+3X4=360+80=90- 26=55 + 41 =5X 28=90-26=300X7 =8X 6+ 7=30X4 =60X5 =8X 6+ 7=85+247=522+23=581 +1

33、2=17X3 =522+23=310X3 =6X4-2=400X5 =212 + 88=6X4-2=630-9 =120X4 =45-3 =630-9 =120X4 =350-7 =80X5 =51 + 31 =350-7 =80X5 =700X2 =40X5 =13X3 =700X2 =40X5 =18X4 =15X 5+ 5=60-4 =18X4 =15X 5+ 5=320X3 =600- 50=120-50=320X3 =600- 50=60X 15=56X2 =300-64=60X 15=56X2 =72-6-2 =200- 36=15+5X3 二18X4 =15X 5+ 5=408

34、=425X0 =380+50 二320X3 =600- 50=25X3 =528-0=789+ 0=60X 15=56X2 =268+125=450+ 80=300-5 =72-6 -2 =200- 36=280+40=57+140=15X 4+ 8=400X3 =15+5X3 =66-22=800X2 =680X0 =8+ 2X 20 =380+50=46 X 20=3000-400=40X 25=22+ 40=789+ 0=85-42=4207 =6X 6+6=7X 8-7=3005 =90- 31 =6X 80+ 20=436 - 24=568 =15X 4+ 8=60X9 =420-3

35、30=111X9 =380-190=680X0 =55+ 41 =5X 28=120X3 =400X6 =40X 25=30X4 =60X5 =360+80=50-23=6 X 6+6=581 +12=17X3 =300X7 =35X0 =436- 24=400X5 =212 + 88=85+247=40X6 =111X9 =453 =23+19=310X3 =300X6 =120X3 =51 + 31 =64-45=200X 5 =7+3X4=360+80=13X3 =96-3 =320X2 =90-26=300X7 =604 =58+36=6606 =8X 6+ 7=85+247=120-

36、50=40- 11 =700X2 =522+23=310X3 =300-64=110- 60=80X3 =6X42=75+21=64X 10=560- 5000=6309 =120X4 =69 - 57=6+6X7=777 =350-7 =80X5 =49+37=400X5 =60- 6=700X2 =40X5 =81 一 25=50- 31 =44+49=80-9=15-5=5-1 =49- 9=72-9=42-7=9X 3=15-3=6+6=63-7=35-6=42-15=16-8=48-6=3X 8=28-7=18-9=42-6=41-8=7X 6=21-3=180-60=400+ 50

37、=72-8=8+27=36-4=72-40=38+ 26=40-8=63-9=18-2=47+ 8=93- 8=82+9=45-9=63-7=14+ 85=49-7=5X 7=46-8=9X 6=61 + 27=6X 9=6X 3=28-7=9X 9=170+ 20=56-30=6X 7=24+40=46+ 10=5X 9=35-5=7-7=42-7=65 + 40=7X 7=27+ 25=72-8=9- 1 =81 -9=73+ 16=37- 9=72-20=64-8=55 - 20=60+ 300=18- 6=34-8=6X 5=9+ 46=10-5=45+4=6X 8=28-4=9-3=

38、83- 29=45+8=9X 6=6X 4=9-9=5X 6=38-30=5X 9=4X 2=58 + 32=43- 17=56-8=36-9=5X 6=80 - 28=21 + 27=35-7=55- 8=72- 8=33+ 60=32-8=25+20=23-10=81 -9=54-6=30-6=49-7=7X 5=30-O1 40-8=36-4=42-6=29+4=9X 3=61 - 13=64 - 8=35-7=9X 4=54-6=9-1 =7X 7=18+63=67- 7=21-3=42-6=9X 4=36+23=25+36=48-6=8X 6=27-9=36+23=19+20=52+

39、25=37+9 二3X 7=8X 4=42+20=52+42=18+6=8X 6=7X 8=68-54=49-7=45-8=14-7=28- 17=84-48=4-4=38+30=54-9=41-35=44-19=75-46=35-5=28-7 =32-28=35-5=65+20=25-20=29+40=73+18=49-7=28+16=30-6=7- 1 =36-6=81 -9=45- 28=21-7=24-8=12-4=6-3=16-4=6+56=24-4=23+21=4-2=35- 28=18-6=8X 4=32+14=42+7=57- 38=16-8=5X 3=46-24=70-26=

40、26+34=27-9=72+8=90-45=9-9=86-34=8-8=30-11 =45-9=34-18=64-8=5X 7=9X 9=9-3=43+18=40-5=9X 3=8-8=53+36=12-6=42+39=8-8=16-4=73+23=56-8=84- 56=32-8=18+29=14-7=71+17=19+21=7X 8=42-6=45-5=52-14=34+18=5X 9=6X 8=1- 1 =3- 1 =50- 14=18-9=9+36=54-9=63-40=39+25=24+38 二4X 9=71-50=72 - 8=7- 1 =75-9=30-6=56 - 8=37-

41、9=25+ 23=34+18=12-4=45 - 9=7+ 44=12+ 35=20-5=33-25=7X 7=54 9=27+ 7115+30=36-4=48 - 8=64 一 8=46+ 33=18-9=68- 54=57+ 36=3X 7=40- 8=27-3=27-9=44-19=23+ 8=21+ 15=72-9=6X 7=82-48=30- 6=36+ 22=36-4=28-4=74-16=5X 9=59+ 18=72 - 58=32-8=63 - 7=24-4=72+ 24=25+37=7X 3=18+ 9=7+ 63=41-29=30-6=47-29=5X 8=9X 4=44-

42、9=25-5=24-3=48 6=36 - 6=72+ 16=54-6=14-7=45 - 5=9X 7=43+ 32=49-7=54+28=56 - 8=56 - 8=35- 8=44-15=12-6=49-30=28+ 6=56 - 7=15-3=63-7=63 - 9=7X 5=8X 2=85 - 37=64 - 8=35- 7=36+ 4=7+ 56=23+69=30- 5=6X 7=30- 5=56 - 7=24-4=5X 4=32-4=63 - 9=12-6=12-6=36 - 6=18+ 9=64 8=4X 2=24-4=17- 9=27 - 3=38+ 16=21-7=15-3

43、=25+ 5=54 9=45 - 5=7X 3=78+15=83-20=43-30=9- 1 =7-7=8X 9+21 =5X 7=72-9=36-6=81 -9=42+13=24-3=24+8=27- 3=42+13=42-6=7+44=42-7=64 8=21-3=4X 8=54-9=49-7=6X 5+37 二12-4+18=16-4X 8=8 宁 4+48=25-5+36=6X8 - 42=2X 8-4=8X9-9=36-6-3=9 宁 9X6=42-7X 6=96 - 80+7=64 - 40- 8=40 - 4+20=7X 5-8=14- 7+25=15- 5+8=8X 9-8=1

44、X2+20=54 - 6+33=510+200=15-45-9=11 -40-8=7+1X8=130+80=46 8=8X 5-7=9X 3-8=30-6=36-4=4X 5+44=48-8+7= 1800+200=93-80=6X 5+37=10-8-C7X 8=73-4=3X 8-4=7X 6+10=72-8=64 8=24X0=71-7+30=70-5X 9=8X 9+21 =27-9=53+8=4X 9=8-2=32-8=8- 1 =9X 9=84+7=80-44=1800-900=4900- 1800=420+80=430+1000=500- 60=89- 8=64 8=34+9=14-7=5+58=64 - 8=6X 3=9X 9=72-8=42-7=35- 7=19+41=24- 6X 3=4X8 - 5=27-3+6=56-7-3=49-9+7=4X 3-2=6-3X 7=8-4X 3=6X 5+37=12-4+18=16- 4X 8=8宁4+48=25- 5+36=6X8-42=2X 8-4=8X9 - 9=36- 6-3=9宁9 X6

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