新課標(biāo)人教版小學(xué)三年級(jí)數(shù)學(xué)上冊(cè)口算題(共45頁(yè))

1、25X2 =45 X 9 =11+22 =115-24 =25X4 =35X2 =125-26 =564-12 =25X6 =35X4 =456 + 45 =45X10 =25 X 8 =35X6 =90-19 =45-23 =25 X 3 =35 X 8 =12 + 24 =456-12 =25 X 5 =35 X 3 =130-27 =56-45 =25 X 7 =35 X 5 =879 + 54 =56X12 =25 X 9 =35X 7 =95-20 =78-23 =15X2 =35 X 9 =60-13 =25X6 =15X4=125X2=146-23 =125X4 =15X6=12

2、5X4=457 + 456 =25X7 =15X 8=125X6=100-21 =26 + 9=15X 3=125X 8=65-14 =57-38 =15X 5=125X 3=546-457 =1500-700=15X 7 =125X 5=7+ 14=42X2 =15X 9=125X 7=105-22 =660+3 =45X2 =125X 9=70-15 =960+3 =45X4 =123+25=896-546 =180+9 =45 X 6 =80- 17=8+ 16=65+15 =45 X 8 =10+20=110-23 =50 + 5 =45 X 3 =120-25=75-16 =3X80

3、0 =45 X 5 =248+89=155X5 =420+7 =45 X 7 =85- 18=9+ 18=3X220 =420-20=60 + 4=18X4=15X5+5=93+3 =120-50=320 X 3=600-50=880 + 4 =300-64=60X15=56X2=1200-200=64 X 10=72 + 6 + 2=200-36=0+ 51 =6 + 6X7=400 X 3=15+5X 3=0+76 =400 X 5=8+2X 20=380+50=0X85 =50-31 =22 + 40=789+0=70+7 =425 X 0=7X 8-7=300+5=25 X 3=528

4、-0=56 + 8=15X4+8=268+125=450+80=380-190=680X0=280+40=57+ 140=400 X 6=40X25=66-22=800X 2=50-23=6X6+6=46X20=3000-400=35X0=43-24=85-42=420+7=40X6=11X9=90-31 =6X80 + 20=300 X 6=120X3=60 X 9=420-330=7+3X4=360+80=55+41 =5X28=90-26=300X7=30X4=60 X 5=8X6+7=85+ 47=81+12=17X 3=52+23=310X3=400X5=12+88=6X4+2=20

5、0X5=45+3=630+9=120X4=320X2=51 + 31 =350+7=80X5=660+6=13X 3=700X 2=40X5=700X2=80 x 3=450+500=200 + 800=5X9+6=70+550=360-80=24-6=3X8+9=800X6=50+800=8X 3=9X2+4=500X4=9X6=3000- 1500=5X200=540 + 9=72+8=760 + 60=()X 5<3714X 5=28+7=35 + 7=7X () <43350-80=5X9=27 + 53=()X 9<64570+50=360-30=240-120=4

6、 X400=23 X 3=730-700=5000-500=900X3=180 + 3=18+3=3600-600=800X4=200X8=3400 300=30 X2 X 9+3=530-70=120+400=23X4+5=850X2=21 + 7=52 X2X7+8=263-80=700+800=72X8+6=850 + 2=9X4=100 X 42X9+5=98+26X0=48+6=400 X 890X9=6X3=1200 + 800=900 X 5 =8X( ) <6549+7=720+80=40 X 6 =()X 9<3818+6=8X7=10 X 9 =6X () &l

7、t;4945+32=460+400=3X8 =()X 9<2024+8=6X8=18 + 53 =7X () <5040+5=6X7=3X 7+4=5X () <32500+300=45+5=4X 6+2=600 X 4=4800 + 2=84+7=8X9+21 =50 X 9=200+2=80-44=4600+4700=70 X 7=30+3=1800-900=730-190=8 X 800=6000 + 2=4900- 1800=3700-370=5X500=36+3=420+80=8500-5500=19X4=800+4=430+1000=3200+5100=()X 3

8、<25300+3=500-60=96-42=2X () <1548+2=89 8=1200-400=()X 4<2599+9=64-8=830-300=4 X 7+9=26+2=34+9=800+900=3X6+7=600+3=14 + 7=58-36=3X9 + 4=38+ 1 =5+58=7000+3000=6 X6+7=93+3=64 +8=5X7=9X2 + 8=77+7=6X 3=72 + 9=4X7+5=400+2=9X 9=36 + 6=40+2=800+4=72 + 8=81+9=80+4=5000 + 5=78+15=42+13=48+2=500+5=83-

9、20=24 + 3=400 + 2=84 + 4=43-30=24+8=800 + 4=900+9=9+ 1 =27-32=480 + 2=400+5=280+450=42+13=4000 + 2=27+9=7+7=42-6=8000 + 4=53+8=3600+5800=7+44=42+7=2X8 + 4=9X 3-8=18 + 6=64-8=8X9 + 9=30 + 6=15 + 3=21 +3=36+6 + 3=36 + 4=6+3=4X8=9 +9X6=4X 5+44=25 + 5=54+9=42+7X6=48 + 8+7=20 + 5=49+7=96-80+7=1800+200=5+

10、5=42+7=64-40- 8=93-80=30 +6=35+7=40-4+20=6X 5+37=9+3=19+41=7X5 8=10 8+1 =4X3=246X3=14+7+25=7X8=16 + 4=4X8 5=15+5+8=73-4=12 + 4=27+3+6=8X9 8=3X 8+4=8 +2=56+7 3=1X 2+20=7X 6+10=24 + 4=49+9+7=16+8+30=72 + 8=4X4=4X3 + 2=7 X 7+8=64-8=20 + 4=6 +3X7=54+6+33=24X0=24 + 6=8 + 4X3=510+200=71-7+30=2X5=6X5+37=15

11、 45+9=6+2X 8=1 x 1 =12+4+18=1140+8=35-9=2X 1 =16+4X8=7+1 X 8=70 5X9=2X2=8 + 4+48=130+80=8X 9+21 =8+2=25+5+36=46-8=3X 6=10 + 5=6X842=8X5 7=18 + 3=9+3=5X6=12+2=2X 5=25 + 5=1 + 1 =42+6=2+2=20 + 5=18+6=24+3=5+5=18 + 3=6+1 =2X6=18 + 6=8X6=2 + 2=6X6=12 + 6=39-24=12+2=25+5=12 + 6=32 +8=2X7=12 + 4=15 +3=19

12、-7=15+5=3X3=20 + 4=12 + 6=30+5=15+5=30 + 6=12 + 6=24+6=33-9=24 + 4=30 + 6=16+4=18+3=8+ 4=15 + 3=20+4=8+72=10 + 5=25 + 5=15+3=3X6=42 + 6=20 + 5=10+5=42-5=24 + 3=24 +4=5+ 1 =20 +5=20 + 5=20 + 4=18+6=50-7=4+2=15 + 6=30+6=10+5=18 + 3=36 + 6=4X5=26+7=12 + 6=8+12=6X3=9 + 3=12 + 3=15 + 5=4 + 4=18+6=15 + 5=

13、27-8=25+5=30 +5=16 + 4=8 + 4=36+6=20 +4=30 + 5=10 + 2=5 + 1 =5 +67=24 + 6=5X7=25+ 19=77- 19=1 X 1 =300-64=9+3=24+6=2+2=64X10=30+5=30+6=1 + 1 =6+6X 7=20+4=7X8=4+ 1 =400X5=16 +4=20+5=4+ 4=50-31 =25+5=18 6=9+9=425X0=3X6=15+3=25X3=528-0=18+3=5X5=268+125=450+80=30+6=51-8=280+40=57+140=25+5=8+12=66-22=800

14、X2=3X4=36-7=46 X 20=3000-400=20+5=24+6=85-42=420+7=24+4=24+6=90-31 =6X80+20=18 6=16 + 4=60X9=420-330=6X2=25+ 19=55 + 41 =5X28=18+6=10+5=30X4=60X5=4X5=35+6=81 + 12=17X3=18+6=20 + 4=400 X 5=12 + 88=4X5=27-8=45 + 3=630+9=5X4=39-24=51+31 =350+7=17-9=36+6=13X3=700X2=3+18=18+3=60 + 4=18X4=30- 18=8 + 4=120

15、-50=320X3=60 x 15=56X2=800 X 6=200X4=72+6 + 2=200-36=500 X 4=600+6=400X3=15+5X3=540 + 9=60 + 6=8+2X20=380+50=14X5=72 + 8=22+40=789+0=350-80=21+7=7X8 7=300+5=570 + 50=78-28=56+8=15X4+8=23X3=20+180=380-190=680 X 0=180 + 3=480-80=400X6=40X25=200X8=40 + 4=50-23=6 X 6+6=530-70=80+60=35 X 0=43-24=850X2=28

16、+2=40X6=11X9=263-80=40 + 2=300X6=120X 3=850 + 2=60+6=7+3X4=360+80=98 + 26X0=30 + 3=90-26=300 X 7=30+6=50+50=8X6+7=85+ 47=20X3=14X7=52+23=310X 3=100X2=62+18=6X4 + 2=200 X 5=13X4=15X6=120X4=320X 2=300 X 3=42 + 7=80 X 5=660+6=36-12=5+5=40 X 5=700X 2=400X2=700-300=15X 5+5=80 X 3=40X2=16X5=600-50=70+550=

17、15X2=98 -48=21X4=72-41 =130-90=50+3=72+8=60+3=12X5=16 + 2=9X 110=12X4=60X2=18+16 =17X4=0 X 800=52+4=93-28=68- 17=140-60=13X0=86-66=20- 14=48 + 4=40 + 2=95-7=90- 15=20+2=600X2=130X3=80 X 5=6000 + 6=12X8=25+17=72-24=25 X 3=15 + 5=660-600=900 + 9=15X6=1X40=140X3=50-25=420-80=10+30=160X6=84+21=80+120=50

18、0 X 6=80 + 2=200X4=32 X 3=46-2=60X6=20 X 5=75+25=200 + 5=44-12=360-60=16X 3=800 X 3=39 + 3=60+100=40+2=120-20=32X3=60+4=42+58=300 X 5=14X6=90+3=600 X 8=5X 60=15-6=66+2=100+2=36 + 2=38+27=300X4=880-300=14 X3=40X6=24+54=40-25=20-20=500X3=51-3=27+36=120X4=22X4=92+6=48- 16=17X2=100+5=480-8=66 X 3=4X 60=

19、20X6=68 X 8=66-3=45 X 6=93X3=33-3=180X 7=35X0=300-5=8X700=0-54=0+ 17=31 X 8=26 X 3=45 X 2=34X2=770 + 7 二90 X 4=24 X 5=40-2=200-2=2X45=42-2=9X 72=65X2=490-7=777-7=640 + 8=6X42=84-4=320X4=86-2=65-5=43 X 2=0-54=700X4=8X 100=5X 17=45X2 =3X 16=30 X 2 =86-2=24 X 5=3X 80=42-2=95-5=42-2=200-4=800-2=520X3=77

20、7-7=8X 50=7X8=63-7=320X4=46-1 =90-3=280-7=0-54=88-4=94X4=45-3=45X2 =10X7=4X 50 =91-1 =24 X 5=36-3=6X30=25X4=42-2=600-3=52X3=3600-4=777-7=1000X 4=84+ 4=102X5=320X4=700-7=8X63=88-4=270-9=840 + 2 =600X9=22X4=900-3=12X4=990+100=5000+5=68 X 5 =690 + 3 =2X29=63+3=0X 13=39X2=23 X 9 =80+4=560+7=100 + 1 =12X

21、7=5X30=30X6=70 + 5=80X4=81 + 9=80 X 5=100-19=4X25=700 + 7 =96+3=29X3=4X21 =76X2=71 - 22 =79X6 =14X7=50 X 9=60+2=2X 28=720+9=75+5=450 X 3=0X 65=5X 14=400 + 8=100+5=9X 13X0=560+8=1000+5=40+8=50+43=70X8=240 X 0 =230 X 3 =46X2=61+19=20 X 7=29 X 3=7X 140=36X2=320X3=208X 6=18X2=0X999 =250X4=200+4=350 X 4=

22、18X4=403X3=13X 3=87 + 3=3X 13=5X307=90+3=820 + 2=60 + 3=390 + 3 =290-190 =23X4=90-28=200 + 5=4X 19=100-63 =12X5=600X9=540+9=2X 27=7X85=120 + 4=77+7=28 + 4=2X45=640 + 2=240+8=130X3=25X3=860X2=2X 16=83-26=268+125=280+40=57+ 140=400 X 6=40X25=66-22=800X 2=50-23=6X6+6=46X20=3000-400=35X0=43-24=85-42=420

23、+7=40X6=11X9=90-31 =6X80 + 20=300 X 6=120X3=60 X 9=420-330=7+3X4=360+80=55+41 =5X28=90-26=300X7=30X4=60 X 5=8X6+7=85+ 47=81+12=17X 3=52+23=310X3=400X5=12+88=6X4+2=200X5=45+3=630+9=120X4=320X2=51 + 31 =350+7=80X5=660+6=13X 3=700X 2=40X5=700X2=60+4=18X4=15X5 + 5=80X3=120-50=320 X 3=600-50=70 + 550=300

24、-64=60 X 15=56X2=800X6=64 X 10=72+6 + 2=200-36=500X4=6+6X7=400 X 3=15+5X 3=540+9=400X5=8 + 2X20=380+50=14X5=50-31 =22+40=789 + 0=350-80=425X0=7X8 7=300 + 5=570+50=528-0=56+8=15X4 + 8=23X3=450+80=380190=680 X 0=180+3=200X8=40 + 4=72-24=25X3=530-70=80+60=900 + 9=15X6=850X2=28+2=50-25=420-80=263-80=40+

25、2=84+21=80+120=850 + 2=60+6=200X4=32X3=98+26X0=30+3=20X5=75+25=30+6=50+50=360-60=16X3=20 X 3=14X 7=60+100=40 + 2=100X2=62+18=60 + 4=42+58=13X4=15X6=90 + 3=600X8=300X3=42+7=66 + 2=100+2=36- 12=5 + 5=300 X 4=880-300=400X2=700-300=24+54=40-25=40X2=16X 5=51-3=27+36=15X2=98-48=92+6=48-16=200X4=21 X 4=72-

26、41 =130-90=600 + 6=72+8=60 + 3=12X5=60+6=9X 110=12X4=60X2=72+8=17X4=0X 800=52+4=21 + 7=68 17=140-60=13X0=78-28=20- 14=48 + 4=40 + 2=20+180=90- 15=20 + 2=600X2=480-80=80 X 5=6000+6=12X8=15+5=660-600=5X 6+4=5X9+6=1X40=140X 3=7X2+8=3X8+9=10+30=160X6=12X2 + 3=9X2+4=500X6=80+2=20+370=5X200=46-2=60X6=330+

27、160=()X 5<37200 + 5=44- 12=720-140=7X () <43800X3=39+3=900-640=()X 9<64120-20=32 X 3=650+300=4X400=300X5=14X6=480+120=900X3=5X60=15-6=47+30=800X4=36+2=38+27=63+ 3 =2X9+3=14X 3=40X2=70+ 5 =3X4+5=20-20=300X 2=22+ 2 =2X7+8=120X4=50 X 3=56+ 2 =2X8+6=17X2=400X2=57+ 3 =2X9+5=50+3=300X 2=90+ 5 =90

28、X9=16+2=100X 7=27 + 46 =8X () <6518+16 =200 x 3=90 + 47 =()X 9<3893-28=80 x 5=18 + 15 =6X( ) <486-66=900 X 7=92 + 65 =()X 9<2095-7=11X8=18 + 53 =7X () <50130X3=31 x 3=3X 7+4=5X () <3225+17=41X2=4X 6+2=600 X 4=80 X 6=750-300=50 X 9=400 X 8=62+18=70 X 7=104 X 3=360 + 40=8 X 800=0X 10

29、5=20X40=5X500=900 X 2=750-300=19X4=540 + 3=900 + 18=()X 3<25180+170=750 + 25=2X () <15500-192=84 + 21 =()X 4<25560+80=20X40=4X7+9=16 X 4=68 + 17=3X6+7=630 + 3=(25-7) X3X9 + 4=1206=0=6X6+7=210 X 2=5X0X3=9X2 + 8=123 X 3=(5+25) X4=4X7+5=37X6=32 + 4+13=3X9 + 4=900+18=16+7 X2=8X8+7=64+2=30 X 6 X

30、 4=5X5+9=23X4=6 X (580-80)=42 X 3=300+60=420-210 X2=25 X 3=90+6=100X3+32=80 X 9 =910+7=180X5-120=52 x280+60=5X4X 100=7=80+ 16=45 + 9X200=(100-50) x 50= (501-1) X1 = 750-250 x 0= 850- () =300200X ()=200230X4010008400120 X 746 X 2046 -26320 70 X921 X 6021 X5 25X4024X532 X 3024 X 6 308 X 40130034X5035X

31、4 0X 19019+0 46 + 2 = 48 + 2 = 80 + 4 = 84 + 4 = 1100-500=50-26= 71-24=1300-600=15X 3 =77-19=4X500 =6X70 =13X 5 =25+19=1600- 800=6X700 =12X4 =39-24=80 + 2 =60+2 =14X 5 =36 + 6=47-35=40X 5 =36+3 =18 + 3=210X4 =50X 8 =80+2 =28+20=3000+ 300=60X 7 =70X 3 =71+23 =46 + 2 =9X600 =60X4 =73 - 70=2X320 =800X4

32、 =80 + 4 =420+80=40 + 2 =20X 7 =42+7 =500-60=110X7 =8X50 =60+3 =34+25=65 + 27=600X9 =66+3 =87-35=4700- 4000=46+2 =69+3 =26+44=1200-600=66+6 =40+2 =80-27=48 + 2 =31X3 =88 + 4 =999X0 =2X230 =70X 5 =46+2 =60 + 3 =65-27=34X2 =66+3 =35 + 47=400+700=84 - 34=44 + 4 =26 + 34=700X4 =44+46=30X2 =47 - 35=27 +

33、23=300+800=300X 2 =45 - 37=63 + 3 =25+57=50X4 =69 + 3 =5X600 =24X2 =500X4 =800X3 =60 - 24=82+2 =30- 18=700+500=90 + 9 =68+ 17=80 + 4 =44 + 46=30X2 =700+900=84 + 4 =300 + 800=300X2 =39+43=1100-500=25 + 57=50X4 =84-34=50-26=24X2 =500X4 =65-59=71-24=82 + 2 =30-18=70-32=1300-600=15X3 =77-19=63-25=6X70 =

34、13X5 =25+19=54+ 18=6X700 =12X4 =39-24=47+32=60+2 =14X5 =36 + 6=50X6 =40X 5 =36 + 3 =18 + 3=40X 8 =50X 8 =80 + 2 =28+20=200X5 =60X 7 =70X3 =71+23 =31X2 =9X600 =60X4 =73 - 70=55+37=800X4 =80 + 4 =420+80=66+24=20X 7 =42 + 7 =500-60=65-35=8X50 =60 + 3 =34+25=80-26=600 x 9 =66 + 3 =87-35=70X 8 =46+2 =69

35、+ 3 =26+44=4X60 =66+6 =40 + 2 =80-27=90X 5 =31 X 3 =88 + 4 =999X0 =30X6 =70X 5 =46 + 2 =60 + 3 =46+2 =34X2 =66 + 3 =35 + 47=48+2 =84 34=44 + 4 =26 + 34=47 - 35=27+23=4X 60 =66 + 6 =45 - 37=63+3 =90X5 =31 X3 =69+3 =5X600 =30X6 =70X5 =800X3 =60 - 24=46 + 2 =34X2 =700+500=90+9 =48 + 2 =84 - 34=4X500 =6

36、8+ 17=80 + 4 =44 + 46=1600- 800=700+900=84 + 4 =300+800=80+2 =39+43=1100-500=25 + 57=47-35=84 34=50-26=24X2 =210X4 =65-59=71 -24=82 + 2 =3000+300=70-32=1300-600=15X3 =46+2 =63-25=6X 70 =13X5 =2X320 =54+ 18=6X 700 =12X4 =40+2 =47+32=60 + 2 =14X5 =110X7 =50X6 =40X5 =36 + 3 =65+27=40X 8 =50X8 =80 + 2 =

37、4700- 4000=200 X 5 =60X7 =70X3 =1200-600=31X2 =9X 600 =60X4 =48+2 =55+37=800X4 =80 + 4 =2X230 =66+24=20X7 =42 + 7 =65-27=65-35=8X 50 =60 + 3 =400+700=80-26=600X9 =66 + 3 =700X4 =70X 8 =46 + 2 =69 + 3 =40+2 =80-27=48 + 2 =55 + 37=88+4 =999X 0 =2X 230 =66 + 24=46+2 =60+3 =65-27=65-35=66+3 =35+47=400 +

38、 700=80-26=44+4 =26+34=700X4 =70X8 =30X2 =47 - 35=27 + 23=4X60 =300X2 =45 - 37=63 + 3 =90X5= 6X 3=50X4 =69+3 =5X 600 =49 + 7=500X4 =800 X 3 =60 - 24=18 + 6=30- 18=700+500=90 + 9 =45 + 32=77- 19=4X500 =68+17=24 + 8=25+ 19=1600 -800=700 + 900=40 + 5=39-24=80+2 =39 + 43=500+300=36+6=47-35=84 34=450+500

39、=18+3=210X4 =65-59=360-80=28+20=3000 + 300=70-32=50 + 800=71+23 =46+2 =63-25=9X6=73 - 70=2 X 320 =54+18=72 + 8=420+80=40+2 =47 + 32=28 + 7=500-60=110X 7 =50X6 =5X9=34+25=65+27=40X8 =360-30=87-35=4700 - 4000=200X5 =730-700=26+44=1200-600=31 X2 =18 + 3=3400-300=70X2=78 - 48 =26 + 4=120 + 400=3 X 300=3

40、6 + 5=1-34 + 14 ;21 + 7=200 X 8=16X4=25+82=700+800=850-660=870-530=78X3=9X4=80+240=470+65=35+55=48+6=7X90=13X4=81-33=1200+800=57 - 27 =68+27=35X3=720+80=23 X 7=4X 500=240+109=8X7=860-300=0X 58=39 + 29 =460 + 400=21 X 9=900 X 6=200X5=6X8=20X4=57-35=7X3+9=6X7=400 X 8=12 + 12 =36 + 7=45+5=43+6=206 X 5=

41、380+19=200+800=23X6=530 X 3=40X100=24-6=256-97=302+56=2020+20=8X3=7 X 7+6=22X6=75-75 + 5=3000-1500=62+36=40X9=40+360+760+60=28+3=25X6=90=35+7=51-11 =801 X 9=15X4X 8=27+53=17+2=0X 8+5=100-13 X240-120=40 X 5=11X3=6=5000-500=42 X 3=9X 5-13=660+60=3600-600=44X2=130X6=70X30=343 17X800 X2 =390 + 3 =60X5 =

42、20=50+5 =0 +22 =2X44=7000-340=3X800=83-57 =840+4 =3044+306=420+7=29 + 68 =440 + 4 =(6409+233X220=68-49 =32X3 =X 17) +480+4=80X7 =48 + 4 =68=58+33=800 + 4 =540+9 =386-(2525420-20=330 + 3 =90 + 9 =+2005) +93+3 =3X 23=13X3 =15=880+4=64+2 =600X7 =260-80=1200-200 =58 + 26 =120X3 =1 - 23 =11 X 7 =34X2 =48

43、0+2 =26+9=80 46=550 + 5 =39 + 3 =57-38=0 + 51 =800X8 =560+8 =1500-700=0 + 76=420 + 2 =990+3 =42X2 =0X85 =63 + 3 =3X200 =99 +3 =70+7 =160 + 4 =620+2 =770 + 7 =14X2 =800 + 700 =660+2 =660 + 3 =5X900=690 + 3 =640+8 =960 + 3 =2X200=58-0 =880+4 =180 + 9 =84 + 4 =2X440=7500-500=65+ 15=0 + 91 =48 + 2 =0+91

44、 =660 + 6 =930+3=480 + 2 =12X4 =3X31 =0X57 =120X4 =0X97 =360 + 9 =44X2 =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 =230X3 =310X3 =390+3=230 X 3=11X4 =82-55=310X 3=720+9= 4700-700 =600+3=48+28=640+8=480+8=7X50 =800+8=880+8=9X500=80+

45、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=7X 700=840 + 2 =430X2 =540 + 9 =31 X3 =13X3 =34 + 56 =96 + 3 =2X330 =50X6 =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 =62-33 =500+500=33 X2 =800 + 2 =30X 70=6