【优质部编】【精选】2019-2020部编版人教版小学三年级数学上册口算题(45页)

1、精品教案25X2 =45X 7 =248 + 89 =75-16 =25X4 =45 X 9 =85-18 =155X5 =25X6 =35X2 =11+22 =9+18=25 X 8 =35X4 =125-26 =115-24 =25 X 3 =35X6 =456 + 45 =564-12 =25 X 5 =35 X 8 =90-19 =45X10 =25 X 7 =35 X 3 =12 + 24 =45-23 =25 X 9 =35 X 5 =130-27 =456-12 =15X2 =35X 7 =879 + 54 =56-45 =15X4=35 X 9 =95-20 =56X12 =1

2、5X6=125X2=60-13 =78-23 =15X 8=125X4=146-23 =25X6 =15X 3=125X6=457 + 456 =125X4 =15X 5=125X 8=100-21 =25X7 =15X 7 =125X 3=65-14 =26 + 9=15X 9=125X 5=546-457 =57-38 =45X2 =125X 7=7+ 14=1500-700=45X4 =125X 9=105-22 =42X2 =45 X 6 =123+25=70-15 =660+3 =45 X 8 =80- 17=896-546 =960+3 =45 X 3 =10+20=8+ 16=1

3、80+9 =45 X 5 =120-25=110-23 =65+15 =50+5 =81 + 12=60X5=90-26=3X800 =400 X 5=17X3=8X6+7=420 + 7 =45+3=12 + 88=52+23=3X220 =51 + 31 =630 + 9=6X4+2=420-20=13X 3=350 + 7=120X4=93+3 =60 + 4=700X2=80X5=880 + 4 =120-50=18X4=40X5=1200-200=300-64=320 X 3=15X5+5=0+ 51 =64 X 10=60X15=600-50=0+76 =6 + 6X7=72 +

4、6 + 2=56X2=0X85 =400 X 5=400 X 3=200-36=70+7 =50-31 =8+2X 20=15+5X 3=25 X 3=425 X 0=22 + 40=380+50=268+125=528-0=7X 8-7=789+0=280+40=450+80=56 + 8=300+5=66-22=57+ 140=380-190=15X4+8=46X20=800X 2=400 X 6=680X0=85-42=3000-400=50-23=40X25=90-31 =420+7=35X0=6X6+6=60 X 9=6X80 + 20=40X6=43-24=55+41 =420-3

5、30=300 X 6=11X9=30X4=5X28=7+3X4=120X3=欢迎下载360+80=850+2=700 + 800=300X7=98+26X 0=9X 4=85+ 47=6X3=48 + 6=310X3=49+7=1200+800=200X5=18+6=720 + 80=320X2=45+32=8X 7=660 + 6=24+8=460 + 400=700X2=40+5=6X 8=80 X 3=500+300=6X 7=70+550=450+500=45 + 5=800X6=360-80=200 + 800=500X4=50+800=24-6=540 + 9=9X6=8X 3=1

6、4X 5=72+8=3000- 1500=350-80=28+7=760 + 60=570+50=5X9=35 + 7=23 X 3=360-30=27 + 53=180 + 3=730-700=240-120=200X8=18+3=5000-500=530-70=3400 300=3600-600=850X2=120+400=30 X263-80=21 + 7=252 X7100 X 4400 X 8900 X 5 =40 X 6 =10 X 9 =3 X 8 =18 + 53 =3X7+4=4X6+2=5X9+6=3X8+9=9X2+4=5X200=()X 5<377X () <

7、;43()X 9<644 X400=900X3=800X4=2 X 9+3=3X4+5=2X7 + 8=2 X 8 + 6=2X9+5=90 X 9=8X( ) <65()X 9<386X() <49()X 9<207X () <505X() <32600 X 4=50 X 9=70 X 7=8 X 800=5X500=19X4=()X 3<252X () <15()X 4<254 X 7+9=99 + 9=89 8=3X6 + 7=26 + 2=64-8=3X9 + 4=600 + 3=34+9=6 X6+7=38 + 1 =14

8、+ 7=9X2 + 8=93 + 3=5+58=4X7+5=77 + 7=64 +8=40+2=400 + 2=6X3=80 + 4=800 + 4=9X9=48+2=5000+5=72 + 8=400+2=500 + 5=78+15=800+4=84 + 4=83-20=480+2=900 + 9=43-30=4000 + 2=400 + 5=9+ 1 =8000 + 4=27 + 9=280+450=4800 + 2=53+8=7+7=200+2=84+7=3600+5800=30+3=80-44=8X9+21 =6000 + 2=1800-900=4600+4700=36+3=4900-

9、 1800=730-190=800+4=420+80=3700-370=300+3=430+1000=8500-5500=48+2=500-60=3200+5100=96-42=1200-400=830-300=800+900=58-36=7000+3000=5X7=72+9=36+6=81 + 9=42+13=24+3=24+8=27-32=42+13=42-6=7+44=42+7=64-8=21 +3=4X8=54+9=49+7=42+7=35+7=19+41=246X3= 4X8 5=27+3+6= 56+7 3=49+9+7=4X3 + 2=6 +3X7=8 + 4X3= 6X5+37

10、=12 + 4+18=16 + 4X8=8 + 4+48= 25+5+36=6X842= 2X8 + 4=8X9 + 9=36+6 + 3=9 +9X6=42 + 7X6=96-80+7=64-40-8=40-4+20=7X 5-8=14 + 7+25=15 + 5+8=8X 9-8=1X 2+20=16 + 8+30=7X 7+8=54 + 6+33=510+200=15 45 + 9=1140 + 8=7+1X8=130+80=46-8=8X 5-7=9X 3-8=30 + 6=36 + 4=4 X 5+44=48 + 8+7=1800+200=93-80=6X5+37=10-8- 1 =

11、7X8=73-4=3X8+4=7X6+10=72 + 8=64-8=24X0=71-7+30=6+2X 8=35-9=70-5X 9=8X9+21 =3X6=18 + 3=18 + 6=15 + 3=6+3=1 + 1 =12-2=5 +67=25-5=18+6=42 + 6=2X5=20-5=6-1 =24-3=2 + 2=5+ 5=2 3 2=2X 6=5-5=30 :6=12-2=6X6=18-6=9+3=2X7=25-5=12-6=4X3=15-5=12-4=12-6=16-4=30-5=3X 3=15 +3=12-4=24+6=15 + 5=20-4=8-2=16-4=33-9=30

12、-6=24-4=20-4=18 + 3=24-4=4X4=15+3=8+72=8 3 4=20-4=10-5=3X 6=10-5=24-6=5+ 1 =42-5=42-6=2X5=18-6=20 +5=24-3=1 X 1 =30-6=50-7=20-5=2X 1 =4X5=10-5=4-2=2X2=6X3=26 + 7=18-3=8+2=43 4=9+3=12-6=10-5=25-5=18 + 6=12-3=9+3=36-6=30 +5=15-5=5X6=5+1 =20 +4=16-4=30+5=8 + 4=5 X4=27-8=24+6=10+2=17-9=39-24=25+5=5X7=3+

13、 18=36 + 6=20+5=25+ 19=30-18=18 + 3=18+3=9 + 3=77-19=8+4=8X6=30+5=24 + 6=1 X 1 =39-24=20 + 4=30 + 6=2 + 2=32 +8=16 +4=7X 8=1 + 1 =19 -7=25+5=20 + 5=4+ 1 =12+6=3X6=18 6=4 + 4=12+6=18+3=15 + 3=9+9=30+6=30+6=5X 5=25X3=15+3=25+5=51-8=268+125=25+5=3X4=8+ 12=280+40=20+5=20+5=36-7=66-22=24 +4=24 + 4=24 + 6

14、=46 X 20=20+4=18 6=24 + 6=85-42=15+6=6X2=16 + 4=90-31 =36+6=18+6=25+19=60X9=8+12=4X5=10 + 5=55 + 41 =15+5=18+6=35 + 6=30X4=27-8=4X5=20 + 4=81 + 12=400X5=17X 3=8X6+7=300X7=45+3=12+88=52+23=85+ 47=51 + 31 =630+9=6X4+2=310X3=13X 3=350+7=120X4=200X5=60+4=700X 2=80X5=320X2=120-50=18X4=40X5=660+6=300-64=3

15、20 X 3=15X5 + 5=700X2=64 X 10=60 X 15=600-50=80X3=6+6X7=72+6 + 2=56X2=70 + 550=400X5=400 X 3=200-36=800X6=50-31 =8 + 2X20=15+5X 3=500X4=425X0=22+40=380+50=540+9=528-0=7X8 7=789 + 0=14X5=450+80=56+8=300 + 5=350-80=57+ 140=380190=15X4 + 8=570+50=800X2=400X6=680 X 0=23X3=3000-400=50-23=40 X 25=180+3=42

16、0 + 7=35 X 0=6X 6+6=200X8=6X80 + 20=40X6=43-24=530-70=420-330=300X 6=11X9=850X2=5X28=7 + 3X4=120X3=263-80=60 X 5=90-26=360+80=850+2=98+26X0=60+6=84+21=420-80=30+6=30+3=200X4=80+120=20 X 3=50+50=20X5=32X3=100X2=14X 7=360-60=75+25=13X4=62+18=60+100=16X3=300X3=15X6=60 + 4=40 + 2=36- 12=42+7=90 + 3=42+5

17、8=400X2=5 + 5=66 + 2=600X8=40X2=700-300=300 X 4=100+2=15X2=16X 5=24+54=880-300=200X4=98 48=51-3=40-25=600 + 6=21 X 4=92+6=27+36=60+6=72+8=72-41 =48-16=72+8=9X 110=60 + 3=130-90=21 + 7=17X4=12X4=12X5=78-28=68- 17=0X 800=60X2=20+180=20- 14=140-60=52+4=480-80=90- 15=48 + 4=13X0=40 + 4=80 X 5=20 + 2=40

18、+ 2=80+60=72 24=6000+6=600X2=28+2=900+9=25X3=12X8=40+2=50-25=15X6=15 + 5=1 X 40= 10+30=500 X 6= 46 2= 200-5=800X3= 120-20=300X5= 5X 60= 36-2=14 X3= 20-20=120X4= 17X 2= 50+3= 16-2= 18+16 =93-28= 86-66=95-7= 130X3=25+17=660-600=490-7=42-2=140X 3=84 + 4=777-7=160X6=43X2=320X4=80-2=5X 17=0-54=60 X 6=86-

19、2=45X2 =44- 12=95 + 5=24X5=39+3=520 X 3=42 + 2=32 X 3=63-7=777-7=14X 6=280-7=320X4=15-6=45-3=0-54=38+27=91-1 =45X2 =40 X 6=25X4=24X5=500 X 3=3600-4=42-2=22X4=102X5=777-7=100-5=88 + 4=320X4=480-8=22X4=270-9=68 X 8=66X3=900-3=33-3=66-3=4X 60=8 X 700=180X7=45 X 6=26 X 3=0-54=35X0=90 X 4=45X2=0-17=2X45=

20、24X5=34X2=40+2=770 + 7 =5X 30=560+7=9X72=200+2=81+9=30X6=640 + 8=65X2=700 + 7 =80X5=86+2=6X42=76X2=96 + 3=700X4=65+5=50X9=71 - 22 =3X 16=8X 100=75 + 5=60 + 2=3X80=30 X 2 =400 + 8=450X3=200 + 4=42+2=1000+5=100+5=8X50=800+2=240 X 0 =40 + 8=46+ 1 =7X8=20X7=230 X 3 =88+4=90+3=320 X 3=29X3=10X 7=94X4=250

21、X4=208X6=36+3=4X 50 =403 X 3=200+4=600 + 3=6X30=5X 307=13X3=1000X4=52 X 3=390 + 3 =90 + 3=700 + 7=84 + 4=200 + 5=290-190 =840 + 2 =8X63=600 X 9=4X 19=12X4=600 X 9=120 + 4=540+9=20X6=990+100=640 + 2=77 + 7=93 X 3=5000 + 5=860 X 2=240+8=300 + 5=63+3=68 X 5 =2X 16=31X8=80 + 4=0X 13=690 + 3 =39X2=2X29=2

22、68+125=528-0=100+1 =23 X 9 =280+40=450+80=70+5=12X 7=66-22=57+140=100-19=80X4=46 X 20=800X2=29 X 3=4X25=85-42=3000-400=79X6 =4X21 =90-31 =420+7=2X28=14X 7=60X9=6X80+20=0X65=720+9=55 + 41 =420-330=9X 13X0=5X 14=30X4=5X28=50+43=560+8=81 + 12=60X5=46X2=70 X 8=400 X 5=17X3=7X 140 =61+19=45 + 3=12 + 88=1

23、8X2=36X2=51+31 =630+9=350X4=0X999=13X3=350+7=87+3=18X4=60 + 4=700X2=820 + 2=3X 13=120-50=18X4=23X4=60+3=300-64=320X3=100-63=90-28=64X10=60X15=2X27=12X 5=6+6X 7=72 + 6+2=28+4=7X85=400 X 5=400X3=130X3=2X45=50-31 =8+2X20=83-26=25 X 3=425 X 0=22 + 40=7X8 7=789+0=14X5=60 + 6=56+8=300+5=350-80=72 + 8=380-

24、190=15X4+8=570 + 50=21+7=400X6=680 X 0=23X3=78-28=50-23=40X25=180 + 3=20+180=35 X 0=6 X 6+6=200X8=480-80=40X6=43-24=530-70=40 + 4=300X6=11X9=850X2=80+60=7+3X4=120X 3=263-80=28+2=90-26=360+80=850 + 2=40 + 2=8X6+7=300 X 7=98 + 26X0=60+6=52+23=85+ 47=30+6=30 + 3=6X4 + 2=310X 3=20X3=50+50=120X4=200 X 5=

25、100X2=14X7=80 X 5=320X 2=13X4=62+18=40 X 5=660+6=300 X 3=15X6=15X 5+5=700X 2=36-12=42 + 7=600-50=80 X 3=400X2=5+5=56X2=70+550=40X2=700-300=200-36=800X 6=15X2=16X5=15+5X3=500X4=200X4=98-48=380+50=540+9=600 + 6=21 X 4=72+8=72-41 =48-16=120X4=9X 110=60+3=130-90=17X2=17X4=12X4=12X5=50+3=68 -17=0 X 800=6

26、0X2=16 + 2=20- 14=140-60=52+4=18+16 =90- 15=48 + 4=13X0=93-28=80 X5=20+2=40 + 2=86-66=72-24=6000 + 6=600X2=95-7=900 + 9=25 X 3=12X8=130X3=50-25=15X6=15 + 5=25+17=84+21=420-80=1X40=660-600=200X4=80+120=10+30=140X3=20 X 5=32 X 3=500 X 6=160X6=360-60=75+25=46-2=80 + 2=60+100=16X 3=200 + 5=60X6=60+4=40+

27、2=800 X 3=44-12=90+3=42+58=120-20=39 + 3=66+2=600 X 8=300 X 5=32X3=300X4=100+2=5X 60=14X6=24+54=880-300=36 + 2=15-6=51-3=40-25=14X3=38+27=92+6=27+36=20-20=40X2=300X2=70+ 5 =2X 9+3=4X7+9=50 X 3=22+ 2 =3X4+5=3X6+7=400X2=56+ 2 =2X 7+8=3X9+4=300X2=57+ 3 =2X 8+6=6X6+7=100X7=90+ 5 =2X 9+5=9X2+8=200X3=27 +

28、 46 =90X9=4X7+5=80 X 5=90 + 47 =8X () <653X9+4=900X7=18 + 15 =()X 9<388X8+7=11X8=92 + 65 =6X( ) <45X5+9=31X3=18 + 53 =()X 9<2042X3=41X2=3 X 7+4=7X () <5025X3=5X6 + 4=4X6 + 2=5X () <3280X9 =7X2 + 8=5X9 + 6=600 X 4=52 X12X2 + 3=3X8 + 9=50X9=7=20+370=9X2 + 4=70X7=80 X330+160=5 X 200=8

29、 X 800=6=720-140=()X 5<375X 500=400 X 8=900-640=7X( ) <4319X4=104 X 3=650+300=()X 9<64()X 3<250X 105=480+120=4 X 400=2X () <15900 X 2=47+30=900 X 3=()X 4<25540 + 3=63+ 3 =800X4=180+170=500-192=900+18=850- () =3006 X700 =560+80=750+25=200X ()60 + 2 =16X 4=84+21 =20040X5 =630 + 3=20X

30、40=230X40100050X8 =1206=68+ 17=8400120 X 760X7 =210 X 2=(25-7) X46 X 2046 -29X600 =123 X 3=0=632070 X 9800X4 =37X6=5X0X3=21 X 6021 X 520X7 =900+18=(5+25) X4=25 X 4024 X 58X50 =64+2=32 + 4+13=32 X 3024 X 6600X9 =23X4=16+7 X 2=308 X 40130046 + 2 =300 + 60=30 X 6 X 4=34 X 5035 X 466 + 6 =90+6=6 X (580-

31、80)=0X 19019+031 X3 =910 + 7=420-210 X2=46 + 2 =70X5 =280+60=100X 3+32=48 + 2 =34X2 =80+ 16=180 X 5-120=80 + 4 =84 - 34=750-300=5X4X100=84 + 4 =44 + 46=62+18=45+9X200=1100-500=300+800=360 + 40=(100-50) x50-26=25 + 57=20X40=50=71-24=24X2 =750-300=(501-1) X1 =1300-600=82 + 2 =750-250 x 0=6X 70 =15X3 =

32、13X 5 =77- 19=700+500=60 - 24=12X4 =25+ 19=4X 500 =90 + 9 =14X 5 =39-24=1600- 800=68+17=36+3 =36+6=80 + 2 =700+900=80+2 =18+3=47-35=39 + 43=70X3 =28+20=210X4 =84 34=60X4 =71+23 =3000+ 300=65-59=80+4 =73 - 70=46 + 2 =70-32=42+7 =420+80=2X 320 =63-25=60+3 =500-60=40 + 2 =54+18=66+3 =34+25=110X7 =47 +

33、32=69+3 =87-35=65 + 27=50X6 =40+2 =26+44=4700- 4000=40X8 =88+4 =80-27=1200-600=200X5 =46+2 =999X 0 =48 + 2 =31 X2 =66+3 =60+3 =2X 230 =55 + 37=44+4 =35+47=65-27=66 + 24=30X2 =26+34=400 + 700=65-35=300X2 =47 - 35=700X4 =80-26=50X4 =45 - 37=27 + 23=70X8 =500X4 =69+3 =63 + 3 =4X60 =30- 18=800 X 3 =5X 6

34、00 =90X5 =30X6 =31 X 3 =40 + 2 =26+44=46+2 =70X 5 =88 + 4 =80-27=48+2 =34X2 =46 + 2 =999X0 =80+4 =84 - 34=66 + 3 =60 + 3 =84+4 =44 + 46=44 + 4 =35 + 47=1100-500=300+800=30X2 =26 + 34=50-26=25+57=300X2 =47 - 35=71-24=24X2 =50X4 =45 - 37=1300-600=82+2 =500X4 =69 + 3 =6X70 =15X 3 =30-18=800X3 =6X700 =1

35、3X 5 =77-19=700+500=60+2 =12X4 =25+19=4X500 =40X 5 =14X 5 =39-24=1600- 800=50X 8 =36+3 =36 + 6=80 + 2 =60X 7 =80+2 =18 + 3=47-35=9X600 =70X 3 =28+20=210X4 =800X4 =60X4 =71+23 =3000+ 300=20X 7 =80 + 4 =73 - 70=46 + 2 =8X50 =42+7 =420+80=2X320 =600X9 =60+3 =500-60=40 + 2 =46+2 =66+3 =34+25=110X7 =66+6

36、 =69+3 =87-35=65 + 27=4700- 4000=40X 8 =40X5 =14X5 =1200-600=200 X 5 =50X8 =36 + 3 =48+2 =31X2 =60X7 =80 + 2 =2X230 =55+37=9X 600 =70X3 =65-27=66+24=800X4 =60X4 =400+700=65-35=20X7 =80 + 4 =700X4 =80-26=8X 50 =42 + 7 =27+23=70X 8 =600X9 =60 + 3 =63+3 =4X60 =46 + 2 =66 + 3 =5X600 =90X 5 =66 + 6 =69 +

37、 3 =60 - 24=30X6 =31 X3 =40 + 2 =90+9 =46+2 =70X5 =88 + 4 =68+ 17=48+2 =34X2 =46 + 2 =700+900=80 + 4 =84 - 34=66 + 3 =39+43=84 + 4 =44 + 46=44 + 4 =84-34=1100-500=300 + 800=30X2 =65-59=50-26=25 + 57=300X2 =70-32=71-24=24X2 =50X4 =63-25=1300-600=82 + 2 =500X4 =54+ 18=6X70 =15X3 =30-18=47+32=6X700 =13

38、X5 =77-19=50X6 =60+2 =12X4 =25+19=39-24=1600 -800=68+17=18 + 6=36+6=80+2 =700 + 900=45 + 32=18+3=47-35=39 + 43=24 + 8=28+20=210X4 =84 34=40 + 5=71+23 =3000 + 300=65-59=500+300=73 - 70=46+2 =70-32=450+500=420+80=2 X 320 =63-25=360-80=500-60=40+2 =54+18=50 + 800=34+25=110X 7 =47 + 32=9X6=87-35=65+27=5

39、0X6 =72 + 8=26+44=4700 - 4000=40X8 =28 + 7=80-27=1200-600=200X5 =5X9=999X0 =48+2 =31 X2 =360-30=60+3 =2X230 =55 + 37=730-700=35+47=65-27=66 + 24=18 + 3=26+34=400+700=65-35=3400-300=47 - 35=700X4 =80-26=120+400=45 - 37=27+23=70X8 =21+7=69+3 =63+3 =4X 60 =700+800=800X3 =5X600 =90X5 =9X4=700+500=60 - 2

40、4=6X 3=48 + 6=4X500 =90+9 =49 + 7=1200+800=720+80=57 - 27 =13X4=35+55=8X7=23 X 7=68+27=81-33=460 + 400=860-300=4X 500=35X3=6X8=21 X 9=0X 58=240+109=6X7=20X4=900 X 6=39 + 29 =45+5=400 X 8=57-35=200X5=200+800=43+6=12 + 12 =7X3+9=24-6=23X6=206 X 5=36 + 7=8X3=256-97=530 X 3=380+19=3000-1500=7 X 7+6=302+

41、56=40X100=760+60=62+36=22X6=2020+20=35+7=28+3=40X9=75-75 + 5=27+53=51-11 =25X6=40+360+240-120=17+2=801 X 9=90=5000-500=40 X 5=0X 8+5=15X4X 8=3600-600=42 X 3=11X3=100-13 X70X2=44X2=9X 5-13=6=3X300=78 - 48 =130X6=660+60=200X8=36+5=26 + 4=70X30=850-660=16X4=1-34 + 14 =34+17X80+240=870-530=25+82=20=7X90

42、=470+65=78X3=7000-340=3044+306=3X800=0 +22 =60X5 =(6409+23420+7=83-57 =2X44=X 17) +3X220=29 + 68 =840+4 =68=480+4=68-49 =440 + 4 =386-(252558+33=80X7 =32X3 =+2005) +420-20=800 + 4 =48 + 4 =15=93+3 =330 + 3 =540+9 =260-80=880+4=3X 23=90 + 9 =1 - 23 =1200-200 =64+2 =13X3 =26+9=11 X 7 =58 + 26 =600X7 =

43、57-38=80 46=34X2 =120X3 =1500-700=0 + 51 =550 + 5 =480+2 =42X2 =0 + 76=800X8 =39 + 3 =99 +3 =0X85 =420 + 2 =560+8 =770 + 7 =70+7 =63 + 3 =990+3 =660 + 3 =14X2 =160 + 4 =3X200 =960 + 3 =5X900=800 + 700 =620+2 =180 + 9 =2X200=690 + 3 =660+2 =65+ 15=84 + 4 =58-0 =640+8 =660 + 6 =0 + 91 =2X440=880+4 =80

44、0 X2 =930+3=48 + 2 =7500-500=50+5 =390+3=480 + 2 =0+91 =12X4 =3X31 =0X57 =120X4 =0X97 =360 + 9 =44 X 2 =960 + 3 =32X2 =2X440 =460 + 2 =70+500=3X33 =280 + 4 =9X400 =3X330 =690 + 3 =49+33=700 + 7 =23 X 3 =78 -36=11X4 =230 X 3=310X 3= 390+3=230 X 3=11X4 =82-55=310X 3=720+9= 4700-700 =600+3=48+28=640+8=

45、480+8=7X50 =800+8=880+8=9X500=80+ 17=54+28=42 X 3 = 1700-800 =90+3 =180 + 3 =300 + 5 =930 + 3 =800 + 4 =60-15 =900 + 3 =450 + 9 =360 + 6 =37 + 56 =32X3 =70X7= 1200-700=300 + 6 =50X7 =0X 37 =53-14 =17 + 27 =840 + 4 =2X 14=140 + 2 =660 + 6 =7X 800=7X700 =840+2 =430X2 =540+9 =31 X3 =13X3 =34 + 56 =96 + 3 =2X330 =50X6 =680+2 =620+2 =6X8