二年级下册口算题 (2)

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+ 60 = 590 + 300 = 200 + 670 = 240 + 630 = 520 + 360 = 370 + 420 = 420 + 170 = 234 + 23 = 234 + 123 = 245 + 24 = 245 + 224 = 431 + 16 = 431 + 216 = 456 + 23 = 122 + 17 =124 + 12 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+ 500 = 72 8 = 8000 - 3000 = 35 6 = 5800 + 400 = 16 4 = 32 7 = 2000 - 1600 = 7300 + 200 = 65 8 = 1000 - 500 = 600 + 300 = 400 + 20 = 47 5 = 800 + 100 = 25 3 = 2500 - 2000 = 36 8 = 558=548=275=188=527=487=296=889=600-200=700+300=m00-400=500-200=3700-700=250-50=500+500=3400-400=590-500=900-600=354=263=458=90+300=327=480-80=123=400+200=186=900-300=143=300+600=487=750-50=700+70=509=760-700=406=70+900=308=8000+400=427=113=9600-600=829=2000+4000=437=600+5000=10000-2000=185=4700-700=649=1000-900=426=5400-400=568=405=300-20=1000-300=8000+200=4000+6000=6500-500=7400-400=800+2000=490-90=750-50=560-500=300+200=800-700=208=144=469=245=546=213=258=416=507=800-600=9000-7000=9900-9000=760-700=80+300=2700-200=6000-4000=1800-800=5000+900=600+4000=8200-8000=5000+5000=3000+500=6000-2000=80+600=9000+1000=5600-5000=3200-3000=7000+700=2000-1000=500+80=370-70=610-10=20+300=720-700=3000+2000=500-300=6000+800=800+3000=6400+600=290-90=740-700=900-400=280-80=304=357=506=213=165=189=537=103=396=285=429=559=10000-6000=738=2000+800=637=3000-1000=829=8000-7000=9000+1000=184=70+900=132=30+600=364=700+30=368=800+50=237=300+400=293=60-30=194=5000+400=608=6000-5000=8700-8000=245=300+100=409=5000+400=315=800-100=596=200+600=649=900-400=648=500-100=459=100-60=369=30+70=700-60=327=586-298=341+361=235=482+493=987-199=188=567-298=468=431-125=196=513-369=437=483-271=516-433=509=326=224=478=556=699=285=528=578=316=577=254+399=368+177=25