四年级口算练习题(精编)
640+80=27x3=48+27=20x420=15x5=56+14=4500x20290x300=23x3=24+8=73+158100+300=12x2x5=14x2=120x600=7600+200=480+8083-45=200x360=7600+400=16x5=560÷80=6800x400m680+270=27x3=96÷24=280+270=980-14=90+15=40÷20=4x2500m4200+3048+4=40x30=6000+40=6x1300=640+16=37+26=5x1280=1300x50=39÷3=76-39=310-70=200x48=24x20=605+59=400x14=930-660=32x3=30x23=470+180=530+280=48+1612x8m1000+25=9200+40012x8=27+32=160x600m840+21=180x500=760x20=270÷30=140x7=8000+500=7500+500=270x30=13x6=1900+20370x200=84+21=280x3=200x160=650+13=76+9=350x2=8700+300=8600-4200=66+7=50x11=300x330m240x4=100-54=250x6=3x1400=640÷80=123+15=7200+900=7000+14=15x10=360-4=410-201=600+12=12x11=55+5=125x8=9600+80=160x30=32x6=48x20=140x300=220x40m7000+70=6600÷600=8800÷40=104x5=200:40=390+140=9600+800=4500÷50=180-30=11x80=750-290m120x2=240+40=24x50=5x49090+30=35x2=3600+400=