二年级下册数学口算综合练习题(可直接打印).doc

1、小学二年级数学下册口算复习题24+4 =44-9=9X9 =5X9 =27+ 9 =7+63=72+16=46+10=7X7 =53+8=9X4 =43+32=65+40=73+16=4X9 =36+ 6 =35-8=81 + 9 =60+300=8 + 2 =9X7 =56+ 7 =55-20=10+ 5 =32+8 =56+ 8 =8X2 =9+46=83-29=8+1 =28+6=7+56=9-3 =5X6 =9X9 =7X5 =56+ 7 =9 + 9 =43-17=84+7=36+4=12+6 =58+32=21+27=80-44=30+ 5 =4X2 =80-28=32+8 =18

2、00 -900=63+ 9 =21-7=33+60=30+ 6 =420+80=64+ 8 =7X3 =54+ 6 =36+4 =500-60=38+16=8 + 8 =40+ 8 =64+ 8 =89-8=45+ 5 =32+4 =()X4=205+1 =64-8=7+1 =80-9=61-13=15+ 3 =34+9=25+23=()X6=3015+ 5 =16+ 8 =14+ 7 =12+35=42+7 =9X3 =42+6 =5+58=27+71=35-6=42-15=400+50=64+ 8 =46+33=28+ 7 =18+ 9 =38+26=6X3 =40+ 8 =()X8=48

3、180-60=93-8=9X9 =21+15=21 + 3 =72-40=49+ 7 =72+8 =36+22=6 + 4 =47+8=6X9 =78+15=59+18=18+ 2 =14+85=56-30=83-20=72+24=63+ 7 =61+27=35+ 5 =43-30=41-29=9X6 =170+20=27+25=9+1 =7-7 =4X8-5=1 X2+20=70-5X9 =9-1 =8X9+21 =27-3+6=54-6+33=8X9+21 =7-7 =96-42=56-7-3=15-45-9 =27-9 =8X9+2158-36=49-9+7=11-40+8=53+8=9

4、6-42=5X7 =4X3-2=7+1X8 =4X9 =58-36=72-9 =6-3X7=130+80=8-2 =5X7 =36-6 =8-4X3=46-8=32-8 =72-9 =81 + 9-6X5+37=8X5-7=8-1 =36-6 =42+13=12-4+18=9X3-8=9X9 =81 + 9 =24-3 =16-4X8 =30-6 =84+7=42+13=24+8=8 + 4+48=36-4 =80-44=24-3 =27-3=25-5+36=4 X 5+44=420+80=24+8=42+13=6X8-42=48-8+7=500-60=27-3=42-6=2 X 8 + 4

5、=1800+200=89-8=42+13=7+44=8x9+9=93-80=64-8=42-6=42-7 =36-6-3 =6X5+37=34+9=7+44=64-8=9-9X6=10-8-1 =14+7 =42-7 =21-3 =42-7X6 =7X8 =5+58=64-8=4X8 =96-80+7=73-4=64-8 =21-3 =54-9 =64-40-8=3X8-4=6X3 =4X8 =49-7 =40-4+20=7X6+10=9X9 =54-9 =42-7 =7X5-8=72-8 =72-8 =49+7 =35-7 =14-7+25=64-8=78+15=42-7 =19+41=15

6、-5+8=24X0 =83-20=35-7 =24-6X3 =8X9-8=71-7+30=43-30=19+41=24-6X3 =8X9-8=4X5+44=72+24=63+ 7 =4X8-5=1X2+20=11-40+ 8 =41-29=9X6 =27+3+6=93-80=24+4 =44-9=9X9 =56+ 7-3=6X5+37=7+63=72+16=46+10=49+9+7=10-8+1 =9X4 =43+32=65+40=4X3+2=7X8 =36+ 6=35-8=81 + 9 =6-3X7=73-4=9X7 =56+ 7 =55-20=8+4X3=3X8+4=56+ 8 =8X2

7、=9+46=6X5+37=7X6+10=28+6=7+56=9-3 =12+4+18=72+8 =7X5 =56+ 7 =9+9 =16+4X8 =64-8=36+4=12+6 =58+32=8+4+48=24 X 0 =30+ 5 =4X2 =80-28=25+5+36=71-7+30=63+ 9 =21-7=33+60=6X842=48+ 8+7=64+ 8 =7X3 =54+ 6 =2X8+4=70-5X9 =38+16=8 + 8 =40+ 8 =8X9+9=8X9+21=45+ 5 =32+4 =()X4=2036+ 6 + 3 =54+ 6+33=7+1 =80-9=61-13=9

8、+9X6=510+200=25+23=()X6=3015+ 5 =42+7X6 =7+1X8 =12+35=42+7 =9X3 =96-80+7=130+80=27+71=35-6=42-15=64-40-8=46-8=46+33=28+ 7 =18+ 9 =40-4+20=8X5-7=40+ 8 =()X8=48180-60=7X5-8=9X3-8=21+15=21 + 3 =72-40=14+7+25=30+ 6 =36+22=36+4 =47+8=15+5+8=36+4 =59+18=18+ 2 =14+85=61+27=35-5 =72+24=63-7 =61+27=170+20=27

9、+25=41-29=9X6 =170+20=5X9 =24-4 =44-99X9 =5X9 =7X7 =7+63=72+16=46+10=7X7 =73+16=9X4 =43+32=65+40=73+16=60+300=36-6 =35-8=81 + 9 =60+300=10-5 =9X7 =56-7 =55-20=10-5 =83-29=56-8 =8X2 =9+46=83-29=5X6 =28+6=7+56=9-3 =5X6 =43-17=7X5 =56-7 =9-9 =43-17=21+27=36+4=12-6 =58+32=21+27=32-8 =30-5 =4X2 =80-28=32

10、-8 =30-6 =63-9 =21-7=33+60=30-6 =36-4 =64-8 =7X3 =54-6 =36-4 =64-8 =38+16=8-8 =40+8 =64-8 =5-1 =45+5 =32-4 =()X4=205-1 =15-3 =7-1 =80-9=61-13=15-3 =16-8 =25+23=()X6=3015-5=16-8 =42-6 =12+35=42-7 =9X3 =42-6 =400+50=27+71=35-6=42-15=400+50=38+26=46+33=28-7 =18+9 =38+26=93-8=40-8 =()X8=48180-60=93-8=49

11、+7 =21+15=21-3 =72-40=49+7 =6X9 =36+22=36-4 =47+8=6X9 =56-30=59+18=18-2 =14+85=56-30=35+ 5 =72+24=9X6 =61+27=35+ 5 =27+25=41-29=4X2 =170+20=27+25=24+4 =44-9=9X9 =5X9 =27+ 9 =7+63=72+16=46+10=7X7 =53+8=9X4 =43+32=65+40=73+16=4X9 =36+ 6 =35-8=81 + 9 =60+300=8 + 2 =9X7 =56+ 7 =55-20=10+ 5 =32+8 =56+ 8

12、=8X2 =9+46=83-29=8+1 =28+6=7+56=9-3 =5X6 =9X9 =7X5 =56+ 7 =9 + 9 =43-17=84+7=36+4=12+6 =58+32=21+27=80-44=30+ 5 =4X2 =80-28=32+8 =14+ 7 =63+ 9 =21-7=33+60=30+ 6 =4X3 + 2 =64+ 8 =7X3 =54+ 6 =36+4 =6-3X7 =38+16=8 + 8 =40+ 8 =64 + 8 =8-4X3=45+ 5 =32+4 =()X4=205+1 =6X5+37=7+1 =80-9=61-13=15+ 3 =12+4+18=

13、25+23=()X6=3015+ 5 =16+ 8 =16+4X8 =12+35=42+7 =9X3 =42+6 =8 + 4+48=27+71=35-6=42-15=400+50=25+5+36=46+33=28+ 7 =18+ 9 =38+26=6X842=40+ 8 =21 + 3 =180-60=93-8=2X8+4=21+15=36+4 =72-40=49+ 7 =8X9+9=36+22=18+ 2 =47+8=6X9 =36+ 6+3 =59+18=63+ 7 =14+85=56-30=9+9X6=42+7X6 =10-8+1 =280+450=46+33=28+ 7 =96-80

14、+7=7X8 =7 + 7 =40+ 8 =21 + 3 =64-40-8=73-4=3600+5800=21+15=36+4 =40-4+20=3X8+4=8X9+21 =36+22=18+ 2 =7X5-8=7X6+10=730-190=59+18=63+ 7 =14+7+25=72+8 =3700-370=72+24=9X6 =15+5+8=8 + 2 =8500-5500=41-29=4X2 =8X9-8=32+8 =24+4 =44-9=9X9 =1 乂 2+20=4900-1800=7+63=72+16=46+10=54+ 6+33=20+80=9X4 =43+32=65+40=5

15、10+200=430+1000=36+ 6 =35-8=81 + 9 =15-45+ 9 =500-60=9X7 =56+ 7 =55-20=11-40+ 8 =89-8=56+ 8 =8X2 =9+46=7+1X8 =64-8=28+6=7+56=9-3 =130+80=34+9=7X5 =56+ 7 =9+9 =46-8=14+ 7 =36+4=12+6 =58+32=8X5-7=5+58=30+ 5 =4X2 =80-28=9X3-8=64+ 8 =63+ 9 =21-7=33+60=30+ 6 =6X3 =64+ 8 =7X3 =54+ 6 =36+4 =9X9 =38+16=8 +

16、8 =40+ 8 =4X5+44=72+8 =45+ 5 =32+4 =()X4=2048+8+7=78+15=7+1 =80-9=61-13=1800+200=83-20=25+23=()X6=3015+ 5 =93-80=43-30=12+35=42-7 =9X3 =6X5+37=9+1 =27+71=35-6=42-15=18+ 9 =38+26=58+8=66+17=72-25=180-60=93-8=26+57=69+21=40-19=72-40=49+ 7 =4+18=28+54=72-7=47+8=6X9 =68+13=39+28=77-22=14+85=56-30=32+18=

17、19+62=91-65=61+27=35+ 5 =65+56=58+32=49-40=170+20=27+25=28+16=43+28=45-30=5X9 =27+ 9 =6+16=18+23=62-7=7X7 =53+8=54+18=43+8=81-3=73+16=4X9 =46+7=36+15=74-21 =60+300=8 + 2 =46+37=29+35=90-9=10+ 5 =32+8 =24+8=25+37=77-39=83-29=8+1 =36+48=54+7=30-12=5X6 =9X9 =25+37=34+9=50-36=43-17=84+7=86+7=24+16=64-38

18、=21+27=80-44=52+18=58+34=28-19=32+8 =18-900=26+8=42+9=35-19=30+ 6 =27+23=5+39=29+27=62-59=36+4 =64+28=72+9=19+35=50-42=64+ 8 =23+49=15+38=68+12=54-37=5+1 =24+57=25+16=27+28=71-33=15+ 3 =34+58=53+39=53+27=72-28=16+ 8 =26+8=58+27=70-3=34-28=42+6 =37+5=46+27=81-18=50-32=400+50=77+5=25+37=71-26=92-47=41

19、-72=44-19=94-4=44-15=9-3 =82-16=66-38=6+50=3X6 =5X6 =85-57=71-28=70+8=18+ 3 =49-721-15=5+40=48-19=18+ 6 =18+653-35=70+1 =37-7=15+ 3 =6 + 2 =44-44=54-4=2+50=6-3 =6 + 2 =32-23=30-18=26+58=25+ 5 =12+240-28=13+60=65+19=20+ 5 =2X7 =43-26=36-17=52-28=5+5 =15+537-21 =4+40=35+26=30+ 6 =30+546-17=17+48=8+70=

20、9-3 =24+665-47=60+3=23+719=4X3 =16+474-47=76-6=32+87=16+4 =20+481-13=87-19=32-26=12+4 =15+365-32=60+3=85-58=8 + 2 =10+572-67=70+9=24+28=24+4 =5+1 =65-19=56-28=78-19=4X4 =18+677-19=49+3=26+28=20+4 =30+ 655-28=32-26=52+29=24+ 6 =4X5 =41-27=62-29=55+17=2X5 =6X3 =92-68=42-27=74-15=6X9 =16+462-57=95-57=5

21、4-48=2X9 =25+560-22=67-7=88-28=9X4 =36+ 670-21 =8+20=81-34=8 + 2 =5+1 =88-9=2+30=35+36=10+ 5 =12+242-6 =36+15=54-6 =36-6 =7X3 =24-3 =29+35=20-4 =24-3 =35-7 =2X6 =25+37=4X9-6=4X5 =2X3+66X6 =54+7=21-3 =27-3 =42-7 =25-5 =34+9=3X6 =8-4 =45+9 =12-4 =24+16=9-3 =56+8 =30-6 =3X8 =58+34=90-45=36-9 =49+7 =15-

22、5 =42+9=24-4 =3X6-6=9X2 =33-9=45+5=15-5 =45-5 =56+7 =18-3 =1 + 1=27-9 =6 + 6=64-8 =8+72=5X5 =9X9 =12-6 =24-6 =3X6 =72-8 =72-9 =1X4 =63-7 =42-5=9-9 =3X4-2=18+6 =8x5 -8=20-5 =24-8 =36-4 =1X8 =4X3 =50-27=14+7=5+5 =24-8 =16-8 =10-5 =6-1 =56+41=36-6 =72-8 =26+7=15-3 =56-7 =48+6 =2X7 =18-3 =3X6-2=16-2 =4X

23、6-8=9-9 =18+6=4 + 2=42-6 =54-6 =27-9 =30-5 =6X2 =18-2 =7-7 =5X7 =20+4=6-2 =5X 1 =5-1 =18+9 =5+67=10-5 =45-39=1X6 =8X3 =4X9 =70 - 52=3X6-3=56-8 =81 + 9+318+23=49+7 =24-6 =21-7 =72-9 =43+8=10-2 =56-7 =28-7 =81 七 9 =9-1 =2X7 =54+9 =40+8 =12-3 =18+9 =4X8 =6X3 =6X6 =5X9 =1X1 =2X6+4=3X 1 =63+9X 4 =20-4 =4

24、2-6 =7X6 =9X6 =7X4 =5X7 =24-8 =12-2 =6X4 =9-1 =9X8 =36-4 =4X9 =4X4 =7X8 =18+3 =63-7 =12-4 =6X5 =24-6 =8-1 =19-2X4 =5X8 =27-9X7 =7X5 =1X6X8=2X5 =6-3 =8X 1 =24-3 =9-9 =54-6 =7X9 =54-6 =81 + 9 =16-2 =2X8 =63-7 =7-1 =3X6 =71-68=20-4 =32-8 =8X8 =25+41=6-1 =4X7 =40+8X 5 =63-7 =56+7X 6 =15-3 =49-7 =2-1 =8X

25、9 =14+2 =9X3 =10-2 =5X3 =8X5 =35-7 =45+45=30-6 =2X6 =40+8 =63+24=5X9 =3X7 =64-8 =9X3 =9X2 =66+26=3X8+40=3X3 =54-9X3 =36-6 =5X 5+52=45-9 =5X4 =6X9 =9X5 =72-8 =9X4 =3X2 =30-6 =35-7 =9X8 =5X6 =16-8 =7X3 =27-3 =52+35=6X2 =23+17=9X9 =4 + 4=8 + 4=32-8 =16-2-4 =16-4 =56+8X 9 =14+2 =1 X 5 =42-6 =7X7 =36-9 =

26、6X2 =48-8 =1X9 =28-7 =42-7 =6-2 =49-7 =42-6 =6X7 =4X7 =6-2 =10-2 =7X2 =35-5 =35-7 =42-6 =54+6X 4 =18-2 =4X9-6=4X9 =64-8X827-9 =65+26=21-7 =36+24=9X2 =20-4 =5X6 =3X8 =12-2 =8 + 4=3X6 =36-9 =8-2 =78-19=49+7 =30+ 6 =6X4 =4X8 =3X8 =45-6=15-5 =54+ 6+ 3 =30-5 =12-4+9=10-2 =49+7 =8-8=18+3 =1 + 1=3X6 =9X4 =

27、4X8 =5X2 =5X5 =9-3 =9-3 =75-64=48+6 =72-8 =8X6 =9X7 =2X1 =42+36=81 + 9 =4+1=42-6X6 =8-8 =8-1-4=8X2 =9X9+12=24-4 =32-4 =25+5 =18+9 =72-9 =18+9 =85-62=63-9 =27-9 =4X5 =9X9 =20-5 =28-4 =27-3 =36-4 =72-9 =6X5 =5X5 =3X4 =45+5 =2X2 =40+5 + 2=81 + 9 =27-9X9 =39+45=30-6 =16-8 =3X6 =5-1 =30-6 =14+2 =50+40=25

28、+41=4X3 =42-7 =7X8 =21-3 =14+7 =15-3 =10-5 =35-5 =5X8 =4X3 =18-2 =4X2 =5X 6+41 =28-7 =90-65=8X6 =18+2+3：80-46=5X4 =4X5 =4-2 =9X5 =10-5 =24-8 =41+25=6X2 =14+2 =4X6 =21 + 3 =6 + 6 =45+ 3 =700X 2 =15+ 5 =4X2 =63+24=51+31=18X 4 =21 + 3 =48+ 6X4 =42-7 =13X 3 =320X 3 =8X4 =35+ 5 =5X2 =60+4 =60X15=24+4 =21

29、 + 7 =56+ 7 =120-50=72+6+28X7 =3X8 =3X7 =300-64=400X 3 =16+ 2 =8 + 2 =12+2 =64 X 10=8+2X 20 =4X8+52=4X1 =4X9+40=6+6X 7 =22+40=24+ 6 =18+ 3 =75+21=400X 5 =7X8-7=3X7 =8X9 =69 57=50-31 =56+ 8 =8+8 =28+4 =49+37=425X 0 =380-190=32+4 =9X1 =81 25=528-0=400X 6 =3X5 =8+1X8=40+ 8 =450+80=50-23=6-3 =3X6 =25X 3

30、 =57+140=35X 0 =3X9 =28+ 7 =268+125=800X 2 =40X 6 =63+ 9 =24+ 8=280+40=3000-400=300X6 =4X9 =3X9 =66-22=420+ 7 =7+3X 4 =25+ 5X8 =20+ 5 =46 X 20=6X80+20=90-26=6X5 =4X1 =85-42=420-330=8X6+7=30+ 5 =12+3 =90-31 =5X28=522+23=6X6 =4X9 =60X 9 =60X 5 =6X4 + 2 =40+ 5 =81 + 9 =55+41=17X 3 =120X4=8X7 =5X7-20=30

31、X 4 =212+88=80X 5 =16+ 8 =25+41=581+12=630+ 9 =40X 5 =36+42=14+ 7 =400X 5 =350+ 7 =15X5+5=600-50=500X4=43X 7 =5000500=581+12=56 X 2 =540+ 9 =245X 9 =8600600=400X 5 =200-36=14X 5 =309X 5 =1300500=45+ 3 =15+5X 3 =350-80=490X 5 =600X 4 =51+31=380+50=570+50=70+550=59+42=13X 3 =789+0=23X 3 =800X 6 =8738=

32、60+4 =300+ 5 =180+ 3 =500X4=43X 7 =120-50=15X 4+8=200X 8 =540+ 9 =245 X 9 =300-64=680X 0 =530-70=14X 5 =309X 5 =64 X 10=40 X 25=850X2=350-80=490X 5 =6+6X 7 =6X6+6=263-80=570+50=75+21=400X 5 =436-24=850+ 2 =23X 3 =6957=50-31 =111X9 =98+26X 0 =180+ 3 =49+37=425X0=120X3=102X2=200X 8 =8125=528-0=360+80=

33、700X3=530-70=40+ 8 =450+80=300X 7 =310X3=850X2=25X 3 =57+140=85+247=300+ 5 =263-80=268+125=800X 2 =310X 3 =80X 5 =850+ 2 =280+40=3000-400=200X 5 =6000+4000=98+26X 0 =66-22=420+ 7 =320X 2 =5000500=102X2=46 X 20=6X80+20=660+ 6 =8600600=700X3=85-42=420-330=700X 2 =1300500=310X3=90-31 =5X28=80 X 3 =600X

34、4=300+ 5 =60X 9 =60X 5 =70+550=59+42=80X 5 =55+41=17X 3 =800X 6 =87 38=6000+4000=30X 4 =212+88=630+ 9 =40X 5 =60X 15=15+5X3=60X15=350+ 7 =15X 5+5=72+6 + 2 =380+50=72+6+2700X 2 =600-50=400X 3 =789+0=400X 3 =18X 4 =56 X 2 =8+2X 20=300+ 5 =8+2X 20 =320X 3 =200-36=22+40=15X4+8=22+40=60 X 15=15+5X 3 =7X8

35、-7=680X 0 =7X8-7=72+6 + 2 =380+50=56+ 8 =40X25=56+ 8 =400X 3 =789+0=380-190=6X6+6=380-190=8+2X 20=300+ 5 =400X 6 =436-24=400X 6 =22+40=15X 4+8=50-23=111X9 =50-23=7X8-7=680X 0 =35X 0 =120X3=35X 0 =56+ 8 =40X 25=40X 6 =360+80=40X 6 =380-190=6X6+6=300X 6 =300X 7 =300X 6 =400X 6 =436-24=7+3X 4 =85+247=7

36、+3X4=50-23=111X9 =90-26=310X 3 =90-26=35 X 0 =120X3=8X6+7=200X 5 =8X6+7=40 X 6 =360+80=522+23=320X 2 =522+23=300X 6 =300X7=6X4+2=660+ 6 =6X4 + 2 =7+3X4=85+247=120X4=700X 2 =120X4=90-26=310X3=80X 5 =80X 3 =80X 5 =8X6+7=630+ 9 =40X 5 =630+ 9 =40X 5 =522+23=350+ 7 =15X5+5=350+ 7 =15X 5+5=6X4+2=700X2=60

37、0-50=700X 2 =600-50=120X4=18X 4 =56 X 2 =18X 4 =56 X 2 =80 X 5 =320X 3 =200-36=320X 3 =200-36=15+5X 3 =85-42=420-330=19+61=31X2 =380+50=90-31 =5X28=80-55=93-31 =789+0=60X 9 =60X 5 =50-39=110-60=300+ 5 =55+41=17X 3 =82-62=63-25=15X 4+8=30X 4 =212+88=30+ 6 =31-15=680X 0 =581+12=23+19=23+36=34+19=40 X

38、25=400X 5 =64-45=6000+900=18+71=6X6+6=45+ 3 =96+ 3 =20+67=50+ 5 =436-24=51+31=58+36=36-18=3100-1000=111X9 =13X 3 =40-11 =30+ 6 =1600-700=120X3=60+4 =110-60=80+ 8 =5400-400=360+80=120-50=5600-5000=78+19=78-69=300X 7 =300-64=77+ 7 =84+4 =18+71=85+247=64 X 10=60-6=21X3 =2000+60=310X 3 =6+6X 7 =44+49=82

39、-26=58+36=75+21=400X 5 =99+ 9 =64+26=9300-300=6957=50-31 =8800-80=19+66=80-22=49+37=425X 0 =9600-6000=80-22=44+29=8125=528-0=800-60=7X10=76-17=40+ 8 =450+80=64+26=85+28=34+19=25X 3 =57+140=77+ 7 =76-17=82-62=268+125=800X2=93-31 =22+29=7X10=280+40=3000-400=44+49=42+2 =93-31 =66-22=420+ 7 =15+67=40-11

40、 =23+19=46 X 20=6X80+20=63-52=90-43=1100-100=23+19=30-5 =4X2 =54-6 =64-8 =82-26=63-9 =21-7=40+8 =5-1 =150-90=64-8 =7X3 =61-13=15-3 =50-39=38+16=8-8 =15-5 =16-8 =18+71=45-5 =32-4 =9X3 =42-6 =800+600=7-1 =80-9=42-15=400+50=9300-300=25+23=42-7 =18+9 =38+26=39-3 =12+35=35-6=180-60=93-8=96-3 =27+71=28-7

41、=72-40=49+7 =39-3 =46+33=21-3 =47+8=6X9 =50-5 =40-8 =36-4 =14+85=56-30=22-2 =21+15=18-2 =61+27=35-5 =44+29=36+22=63-7 =170+20=27+25=63-52=59+18=9X6 =5X9 =37-9=34+19=72+24=9X9 =7X7 =18-6=180-9-18=41-29=46+10=73+16=45+4=24-4 =44-965+40=60+300=45+8=7+63=72+16=81 + 9 =10-5 =38-30=9X4 =43+32=55-20=83-29=

42、56-8 =36+6 =35-8=9+46=5X6 =35-7 =9X7 =56-7 =9-3 =43-17=25+20=56-8 =8X2 =9-9 =21+27=49+7 =28+6=7+56=58+32=32-8 =42-6 =7X5 =56-7 =80-28=30-6 =35-7 =36+4=12-6 =33+60=36-4 =49-9=6+6=7X6 =45-8=54-9 =73+18=48-6 =8+27=38+30=28-7 =45+4X 5 =41-8=63-9 =35-5 =29+40=56+8+7 =72-8 =45七9=25-20=7-1 =49+7+7 =40-8 =4

43、6-8=30-6 =24-8 =49-9+30=82+9=28-7 =21-7 =24-4 =40-5X6 =5X7 =24+40=6+56=8X4 =40+6X 7 =6X3 =42-7 =18-6 =5X3 =6X7 + 6 6X7 =9-1 =16-8 =72+8=72-20+10=7-7 =64-8 =27-9 =30-11 =9X6+9 =72-8 =6X5 =8-8 =9X9 =55+10-8=72-20=28-4 =5X7 =8-8 =29+4-20=34-8=6X4 =9X3 =16-4 =63-7-9 =6X8 =4X2 =8-8 =18+29=8+27+2=9X6 =5X6

44、 =32-8 =42-6 =46+8+4=5X9 =72-8=7X8 =6X8 =42-7X6 =36-9 =81 + 9=5X9 =9+36=6X5 + 6 =55-8=30-21 =18+9 =18+63=4X2X9 =23-10=9X3 =7X7 =36+23=(21+6) +97X5 =54-6 =9X4 =36+23=(7+23) + 629+4=9-1 =27-9 =8X4 =36-6 =9X4 =42-6 =3X7 =7X8 =12-4 =72-9 =8X6 =8X6 =28-17=23+21=63-7 =37+9=14+7 =41-35=32+14=3X8 =18+6=32-2

45、8=46-24=90-45=43+18=84-56=12-6 =25+5=45-9=12-6 =19+21=24-4 =71-50=9-3 =56-8 =34+18=15-3 =56-8 =53+36=71+17=50-14=4X9 =45+9 =73+23=52-14=39+25=30-6 =7X7 =14+7=3-1 =24+38=12-4 =48+8 =45-5 =63-40=75-9=33-25=57+36=1 + 1=21-3 =34+18=36-4 =44-19=54+9 =48+6=20-5 =68-54=82-48=67-7=52+25=15+30=27-9 =74-16=25+36=52+42=18+9 =6X7 =63-7 =19+20=49+7=2