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1、学习必备欢迎下载口算训练二年级下册数学420380=900 + 40 =590 + 90=140 + 70 =40 + 50 =940 60 =100 + 4800 =20+800=190+380=200 + 50 =700 + 400 =480 + 370 =930620=860290=940 710 =670 30 =879 35 =470+310=40 + 900=370 + 490 =750 90 =987 512 =940 50 =360 70 =口算（1）640 570 =208 + 700 =1000 + 210 =530430=700 90 =350 + 20 =600470=
2、800+800=得分：730590=570 50 =800+4500=2300 60 =690 50 =400 + 90 =880 460 =910 480 =590 + 50 =540+ 350 =410+490=510+200=690 370 =440 + 330 =30+100=100+800=50 + 160=690 130 =330 + 310 =300 40 =970930=810 30 =400 + 5300 =10+230=270+710=550370=660 60 =560 440 =90 + 60 =500+600=700190=670+140=140 + 790 =460
3、 50 =930890=820 10 =820310=960 850 =670 450 =680140=600+3000=530 40=40+750=790160=506 + 10=960 260 =830750=口算（2）800 490 =750 + 160 =810+ 20 =650150=430 + 90 =930 70 =300+800=680+220=得分：560280=490180=130 80 =150 + 800 =420 + 90 =180+200=860830=80 + 650=100 + 470 =800 - 30 =440 - 30 =730 - 10 =220+ 29
4、0 =800+800=900 - 10 =620 - 20=得分：300+ 480 =550 - 310 =270 - 40 =90 + 500=610 - 450 =30+ 10 =670 - 340 =590+150=100 + 70=770 + 110 =40+320=80+660=890 - 60 =820 - 80=824 - 77 =670 - 150 =520 - 380 =600+400=500 - 390 =890 - 70 =140+ 80 =19+630=730 - 290 =610 - 40=60+250=330 - 10 =110+550=330+390=330 +
5、600 =800 + 400 =180+660=60+700=800 + 56 =100 + 90=560 - 370 =80 + 620=790 + 94=500 - 240 =700 - 680 =80+250=550 - 80 =口算（3）170 + 740 =5100+ 600 =810-660 =940 - 500 =650 - 630 =400+100=得分：330+600=80 + 70 =70 + 870=370 - 340 =75+810=470 - 450 =520 + 40 =800 + 600 =30+600=110-80 =680+310=340 - 10 =60 +
6、 500=10+ 960 =630+350=980 - 610 =610+300=280 + 390 =80+800=370+ 80 =570 - 180 =520 - 18 =150 + 590 =300 + 220 =100+ 50 =980 - 80 =190 + 20 =760 - 30=160 + 200 =360 + 60 =260 + 70 =570 + 10 =877 - 200 =590 - 20 =240+560=500+900=390 - 220 =2000 + 600 =20 + 600=366 - 348 =666 + 600 =80+ 700=口算（4）600 +
7、8000 =500 - 300 =540+ 30 =530 - 29 =350+280=29 + 45=440 + 530 =460 + 50 =690 + 90 =240 - 180 =970 - 730 =10+ 300=370 + 90=10+ 100 =910-610 =980 - 770 =377 - 95 =470+440=660 - 140 =口算（6）720 + 50 =510+350=330+280=10+ 800=780 - 630 =910- 130 =490+420=970 - 250 =得分：940 - 20 =530 + 90 =460 - 420 =90 + 23
8、0=150 - 90 =340+150=40 + 20 =830 - 740 =560 - 60=490 - 150 =660 + 70 =880-580 =990 - 20 =70 + 210=750 - 70 =760 - 20 =720 - 20 =700+200=690 - 680 =970 - 10 =830+ 70 =570 - 150 =163+230=500 - 190 =890 - 680 =750 + 80 =30+400=250+450=346 + 470 =290 + 470 =900+500=930 - 560 =747 - 115 =920 - 850 =770 -
9、 690 =800 + 400 =720 - 20 =710 - 50=910 - 170 =80+ 20 =口算（5）80+430=200 - 60 =370+450=20+490=360+170=80 + 670=得分：570+ 20 =190-40 =420+180=400 + 30=800+800=90+740=160+720=910 - 650 =620 - 510 =260 + 30 =30+350=980 - 280 =280 - 150 =450 - 360 =890 - 30 =740 - 90 =49 + 716=70 + 170=150 - 40 =550+140=290
10、+470=860 490 =20 + 200=19+900=530+ 20 =610+ 10 =190+240=790 700 =790 + 60 =630 20 =170 20 =620 60 =410 80=500 + 110 =260+670=10+ 200 =890710=100 + 40=730 270 =70+ 700=560 70 =350+260=105 + 570 =900 10 =560 + 30 =610+ 40 =410+570=790 400 =700 70 =868180=90+300=687+245=800 + 200 =930 40 =130 50 =66026
11、0=620 170 =158 + 160 =356 50 =390 + 470 =840 120 =890 50 =450 30=350 + 180 =260 40 =320+230=口算（8）350 + 580 =70+ 10 =910400=240+640=600540=970560=700 + 10 =450 + 180 =得分：250220=210 90 =480 40 =450 70=820 540 =920120=660 + 80 =20 + 520=910 + 80=80+200=90+270=196+ 57 =205+500=57 + 89=370 + 360 =290+590
12、=200+200=570 + 60 =80 + 210=970 340 =970220=750540=780 + 50 =560 80=630 260 =600+ 340 =500 + 60 =40 + 510=560 40=780 80 =830 40 =480+150=850 640 =110 60 =70 + 120=770 + 10=360 90 =740 + 180 =340 90 =580 50 =口算（7）590 + 10 =290+110=180+ 60 =300+500=408 + 55 =850 + 20 =得分：520 + 20=890 640 =740 110 =660 + 50 =500+ 400 =710+210=口算（9）370 50 =50+330=470+330=679 40 =990490=80 + 700=360 + 440 =得分：550200=110 20 =510450=990 720 =900 + 90 =990870=660500=870520=940 + 30=800 420 =770 80 =600
