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1、800X2 =880+4 =800-4=390-3 =50 + 5=65+15 =660+6 =3X 800=420-7 =3X220=480+4 =58 + 33 =420-20 =26+9=57-38 =1500- 700=42X2 =99 + 3=770-7 =960+3 =660+3 =1200-200=11X7=80-46 =0-51 =0 + 76 =0X85 =70-7=14X2 =5X900 =2X200 =84 + 4=0-91 =930-3 =0 + 22 =93 + 3=83-57 =29 + 68 =68-49 =330-3=83-57 =29 + 68 =68-49

2、=80X7 =800-4=330-3=3X23 =64 + 2 =58 + 26 =34X2 =550+5=800X8=420+2 =63 + 3 =160-4=800+700=690+3=180-9 =80X7=58-0 =2X440=660+2 =3X330=48 + 2 =480+2 =60X5=2X44=840+4 =440+4 =32X3=48 + 4=540+9 =90 + 9=13X3=600X7 =120X3 =480+2 =39 + 3=560+8 =990+3 =3X200=620+2 =690+3=49 + 33 =700-7=23X3 =78-36 =11X4 =230

3、X3=310X3=390-3=230X3=11X4 =82-55 =310X3=720-9=4700- 700=600-3=48 + 28 =640+8=480+8=640+8 =880+4 =7500- 500=0-91 =12X4=3X31 =0X57 =120X4 =0X97 =360+9 =44X2 =960+3 =32X2 =2X440 =460+2 =70 + 500=3X33 =280+4 =9X400 =7X50=1200-700=50 x 6 =800-8 =880+8 =9X500=80+17 =54 + 28 =42X3= 1700- 800=90 + 3=180-3 =

4、300-5 =930-3 =800-4 =60-15 =900-3 =450+9 =360+6 =37+56 =32X3=70X7=300-6 =50X7=0X37 =53-14 =17 + 27 =840+4 =2X 14=140-2 =660+6 =7X800 =7X700 =840+2 =430X2 =540+9 =31X3=13X3=34 + 56 =96 + 3=2X330 =680+2 =620+2 =6X800=960+3=1500-900=1800-800=63 + 3 =26 + 57 =800-8=33 + 57 =600X3=37 + 8 =480+8=630-3=62-

5、33 =500+500=33X2 =800-2 =700-8=0+47=24X2 =21X40=560-7 =440+4 =93 + 3=24X2 =0+ 54=23X3=12X30 =7X80=48X10=40X40=40X10=23X30=60X50=70X80=10X68=40X50=30X21 =7X 11 =12X10=31X2=14X20=6X 90=20X 33=90X20=20X13=31X20=22X3=60X90=39X10=21X2 =44X20=12X4=22X30=22X4=30X80=33X10=30X70=10X74=50X10=70X11 =30X40=24X2

6、0=12X20=30X21 =20X70=28X1 =20X13=1X36=10X19=11X50=30X30=28X10=20X50=10X36=50X70=30X33=50X90=12X40=13X30=84X1 =220X3 =23X30=900X6=22X40 =4X 90=34X20=90X40 =60 x 60=33X30=200X3 =60X40=31X20=41 X20=90X30=700X6=21X30=21 X40=84 x 10=10X46=30X20=9X800=3X700=40X90=70X30=33X30=2X31 =2X42 =20X41 =33X20=86 47

7、 =6x 600=40X70=5X90 =24X20 =48+19 =22X30 =50X30=70X6 =6 x 500=0X45=4 x 900=8X70=50X70=2X310=42X20 =800X7 =20 + 35 =400+300=60 + 6=45 + 35 =5X900=10X89=32X20 =10X33=69X10=70X60 =22X0 =200X4 =0+20=6X60=22X40=44 + 20 =40X40 =43X20 =46 + 37 =420+6 =300+6 =40X 11 =360+9 =10X34 =40X90=90X60=490+7 =20X34 =

8、300X3 =80X4=30X80=41X20=97X10=700+7=33X30=0 + 59 =11X80=200+4=31X20 =600+90=4700- 700=44-37 =40X12 =84-47 =630+7=71-23 =0 + 43 =31X30 =21X30 =330+ 3 =250+ 5 =680 80 =21X40 =80X40 =10X37=20X50= 2000+ 300=880+ 2 =70X20 =400+ 4 =0X66 =50X30=640+ 8 =880+ 4 = 400+ 300=34 + 39 =360+ 6 =99X10 =43X2 =0X20=7

9、5+18 =23 + 48 = 90X30 =30X12 =46 + 24 =0-73=42X20 =100-5 =10X50 =350+5 =52-29 =240X2 = 52 + 39 =400-8 =480+8 =33X30 =50X5=800X3 =60X50= 410X2= 41X20= 310X3= 20X23= 440-4=30X32 = 0X35=10X35 = 29 + 61 = 40X70 =30X30 = 50X90=80X30= 20 x 14=90X50= 420 + 6= 300-6= 240 + 4= 69X10 =22X40 =33X20 =900-9=810-

10、9=630+9=30X23 =330X3=0X30=75050=480+8=5000+2000=77-48 =300-5=300+700=420+2 =820+2 =70X11 =4500- 500=20X40 =400-4=11X40=700X 5 =400+600=34 + 29 =800+8=21X30 =720+8=33X30 =32X20 =87X10=500+40=22X40 =440+4=33X20 =320+4=900+3=77-29 =0 + 93 =640+2 =30X50 =75+18 =600+700=900X5 =67-49 =200+4 =8000- 1000=20

11、X24 =57 + 29 =540+6 =10X73 =10X58 =0+49=34X20 =80X90 =30X70=120X4 =640+8 =720+9 =10X34 =65X10 =660+3 =41X20 =7000- 3000=30X30=10X47=30X23=660+ 6 =5900- 5000=11 X40 =70X40 =10X36=6000+ 2000=80X80=29+14 =80X50 =200X 4 =36 + 56 =88X10=600+ 6 =22X30 =40X70=0 + 93 =660+3=43 + 38 =90X50 =84-65 =43-16 =10X

12、80 =57 + 29 =500+40 =88X10 =700X5 =80X90=40X70=21X30=660+6 =65X10 =540+6 =22X40 =80X80 =10X47 =30X70=600+ 6 =10X36=660+ 3 =43 + 38 =720+ 8 =36 + 56 =23X30 =10X73 =90X50=800+ 8 =6000+ 2000=120X 4 =640+ 2 =26+9=57-38 =1500- 700=42X2 =99 + 3=770+ 7 =960+3=180+9=65+15 =660+ 6=800X2 =50 + 5 =3X800=420+7=

13、3X220=480+4=58 + 33 =420-20=93 + 3 =880+4=1200- 200=11X7 =80-46 =0 + 51 =0 + 76 =0X85=70-7=14X2 =5X900=2X200=84 + 4=0-91 =930-3 = 390-3 =0+22=83-57 = 29 + 68 =68-49 = 80X7=800-4 = 330-3 =3X23=64 + 2 =58 + 26 = 34X2 =600X7=120X3=480+2 =39 + 3 =560+8=990+3=3X200=620+2 =660+2 =640+8=880+4=7500-500=0-91

14、 =12X4 =3X31 =0X57 =120X4=0X97 =360+9=44X2 =550-5 =800X 8 =420-2 =63 + 3=160+4 =800+ 700=690-3 =58-0=2X440 =48 + 2 =480-2 =60X5=2X44 =840-4 =440+4 =32X3=48 + 4=540+ 9 =90 + 9=13X3=960+3 =82-55 =800+4=32X2 =2X440=460+2 =70 + 500=3X33=280+4 =9X400=3X330=690+3 =49 + 33 =700+7 =23X3=78-36 =11X4=230X3 =3

15、10X3 =390+3 =230X3 =11X4=310X 3 =720+ 9 =4700- 700=600+ 3 =48 + 28 =640+ 8 =480+ 8 =7X50 =800+ 8 =880+ 8 =9X500 =80+17 =54 + 28 =42X3=1700- 800=90 + 3=180+ 3 =300+ 5 =930+ 3 =60-15 =900+3=450+9=360+6=37 + 56 =32X3 =70X7 =1200- 700=300+6=50X7 =0X37 =53-14 =17 + 27 =840+4=2X14 =140+2 =660+ 6=7X800=7X7

16、00=840+2 =37 + 8=23X30=430X2 =480+8 =60X50=540+9 =630-3 =70X80=31 X3=62-33 =10X68=13X3=500+ 500=40X50=34 + 56 =33X2 =30X21 =96 + 3=800-2 =7X11 =2X330=700-8 =50X70=50 x 6=0 + 47 =24X2 =680+2 =560-7 =30X70=620+2 =440+ 4 =10X74=6X 800=93 + 3=50X10=960+3 =24X2 =70X11 =1500- 900=0 + 54 =30X40=1800- 800=2

17、3X3=24X20=63 + 3=12X30=12X20=26 + 57 =7X80=30X21 =800-8 =48X10=20X70=33 + 57 =40X40=28X1 =600X3 =40X10=20X13=1X36=21X2 =24X20=10X19=44X20=50X30=11X50=12X4 =0X45=30X30=22X30=50X70=28X10=22X4 =800X7=20X50=30X80=60+6=10X36=33X10=10X89=30X33=50X90=69X10=21 X40=12X40=13X30=12X10=220X3=23X30=31X2=22X40=4X

18、90=14X20=90X40=60X60=6X90=200X3=60X40=20X33=41X20=90X30=90X20=21X30=21X40=20X13=10X46=30X20=31X20=3 x 700=40X90=22X3=33X30=2X31 =60X90=20X41 =33X20=39X10=6 x 600=40X70=48+19 =22X30 =360+9=70X6=4X900=2X310=20 + 35 =45 + 35 =32X20 =70X60 =84X 1 =900X6 =34X20=33X30=31X20=700X6 =84X10=9X800=70X30=2X42=8

19、6-47 =5X90=10X34 =40X90=90X60=490+7=20X34 =300X3=80X4 =65X0 =330+3=250+5=680-80=21X40 =80X40 =10X37=20X50=2000+ 300=880+2 =70X20 =400+4=6X500 =8X70=42X20=400+ 300=5X900 =10X33=22X0=80X70=200X 4 =0+20=6X60=22X40=44 + 20 =40X40 =43X20 =46 + 37 =420+ 6 =300+ 6 =40X11 =Ox 66=44-37 =52-29=50X30=40X12 =24

20、0X2 =640+8 =84-47 =52+39=880+4 =630-7 =400-8=400+300=71-23 =480+8=34 + 39 =0 + 43 =33X 30=360+6 =31X30=50X5=99X10 =21X30=800X3=12X20 =43X2=60X 50=30X80=0X20=410X2=41 X20=75+18 =41X20=97X10=23 + 48 =310X3=700-7 =90X30=20X23=33X30 =30X12 =440+4=0+59=46 + 24 =30X32=11X80=0 + 73 =0X35=200-4 =42X20 =10X35=31X20 =100-5 =29+61 =600+90 =10X50 =40X70=4700- 700=350+5 =30X 30=80X30=20X14=90X50=420+6 =300+6

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