30×2= 52×7= 80×6= 100×4= 400×8= 900×5= 40×6= 10×9= 3×8= 10×5= 7×200= 800
30×2=52×7=80×6=100×4=400×8=900×5=40×6=10×9=3×8=10×5=7×200=800×6=80÷4=240÷6=360÷9=108×...
30×2= 52×7= 80×6= 100×4= 400×8= 900×5= 40×6= 10×9= 3×8= 10×5= 7×200= 800×6= 80÷4= 240÷6= 360÷9= 108×7= 810÷9= 67+8= 82+7= 104×3= 0×105= 23×3= 64÷2= 2400÷8= 33÷3= 3×400= 840÷2= 12×3= 400÷5= 5400÷9= 180+170= 500-192= 540÷3= 560+80= (25-7)×0= 0÷8= 21×7= 80-90= 660÷6= 88÷8= 48+73= 640÷8= 710-30= 5400÷6= 80×7= 88÷8= 17×3= 16×4= 200×6= 14×5= 200×4= 180÷3= 320÷8= 0÷9= 30×8= 50×3= 360÷6= 86+7= 80÷4= 630÷3= 24×2= 120÷6= 600×4= 210×2= 48÷4= 90-8= 400×5= 31×3= 900×7= 200×9= 33×2= 600×6= 2000×3= 800×7= 123×3= 36÷3= 88÷4= 3×30= 450÷5= 700÷7= 8×6= 42÷7= 18÷3= 24÷3= 5×0×3= 32÷8= 5×6= 54÷4= 9×50= 16+7×2= 81÷9= 10×3= 48÷8= 20×7= 32÷4+13= 9×4= 6×500= 300×4= 900×2= (5+25)×4= 37×6= 45×3= 64÷2= 23×4= 19×3= 36×2= 47×3= 48×2= 15×2= 39×4= 300÷60= 90÷6= 72÷8= 910÷7= 75-28= 60+180= 420-80= 68÷4= 280+60= 28+25= 360÷40= 540÷60= 30÷3= 270+50= 14×7= 62+18= 15×6= 420÷70= 95÷5= 750-300= 16×5= 92-48= 21×40= 720÷80= 65÷13= 17×4= 68÷17= 70÷14= 90÷15= 80÷16= 72-24= 900÷18= 750÷25= 84÷21= 20×40=
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解: 30×2=60, | 52×7=364, | 80×6=480, | 100×4=400, | 400×8=3200, |
900×5=4500, | 40×6=240, | 10×9=90, | 3×8=24, | 10×5=50, |
7×200=1400, | 800×6=4800, | 80÷4=20, | 240÷6=40, | 360÷9=40, |
108×7=756, | 810÷9=90, | 67+8=75, | 82+7=89, | 104×3=312, |
0×105=0, | 23×3=69, | 64÷2=32, | 2400÷8=300, | 33÷3=11, |
3×400=1200, | 840÷2=420, | 12×3=36, | 400÷5=80, | 5400÷9=600, |
180+170=350, | 500-192=308, | 540÷3=180, | 560+80=640, | (25-7)×0=0, |
0÷8=0, | 21×7=147, | 80-90=-10, | 660÷6=110, | 88÷8=11, |
48+73=121, | 640÷8=80, | 710-30=680, | 5400÷6=900, | 80×7=560, |
88÷8=11, | 17×3=51, | 16×4=64, | 200×6=1200, | 14×5=70; |
200×4=800, | 180÷3=60, | 320÷8=40, | 0÷9=0, | 30×8=240, |
50×3=150, | 360÷6=60, | 86+7=93, | 80÷4=20, | 630÷3=210, |
24×2=48, | 120÷6=20, | 600×4=2400, | 210×2=420, | 48÷4=12, |
90-8=82, | 400×5=2000, | 31×3=93, | 900×7=6300, | 200×9=1800, |
33×2=66, | 600×6=3600, | 2000×3=6000, | 800×7=5600, | 123×3=369, |
36÷3=12, | 88÷4=22, | 3×30=90, | 450÷5=90, | 700÷7=100, |
8×6=48, | 42÷7=6, | 18÷3=6, | 24÷3=8, | 5×0×3=0, |
32÷8=4, | 5×6=30, | 54÷4=13.5, | 9×50=450, | 16+7×2=30, |
81÷9=9, | 10×3=30, | 48÷8=6, | 20×7=140, | 32÷4+13=21, |
9×4=36, | 6×500=3000, | 300×4=1200, | 900×2=1800, | (5+25)×4=120, |
37×6=222, | 45×3=135, | 64÷2=32, | 23×4=92, | 19×3=57, |
36×2=72, | 47×3=141, | 48×2=96, | 15×2=30, | 39×4=156, |
300÷60=5, | 90÷6=15, | 72÷8=9, | 910÷7=130, | 75-28=47, |
60+180=240, | 420-80=340, | 68÷4=17, | 280+60=340, | 28+25=53, |
360÷40=9, | 540÷60=9, | 30÷3=10, | 270+50=320, | 14×7=98, |
62+18=80, | 15×6=90, | 420÷70=6, | 95÷5=19, | 750-300=450, |
16×5=80, | 92-48=44, | 21×40=840, | 720÷80=9, | 65÷13=5, |
17×4=68, | 68÷17=4, | 70÷14=5, | 90÷15=6, | 80÷16=5, |
72-24=48, | 900÷18=50, | 750÷25=30, | 84÷21=4, | 20×40=800. |
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