北师大版二年级数学下册口算练习(一)班级座号姓名87-55=6×7=6000+800=500+700=680-200-230=49÷7=628+306=540+535=4+2×5=(15+25)÷8=38÷6=6×8=560-40=400+200=4×(57-48)=61-14=53+48=524+316=351+249=(35-20)÷3=26÷4=150+328=500-478=1000-600=5+6×4=780-180=370-200=530+140=46÷7=45-15÷5=290+140=560+210=790-75=50÷8=72÷9-8=400-28=550-426=800-704=45÷9=100-(45+25)=275+325=100-69=430+140=56÷7=63+18÷9=43+140=840-400=77-26=51÷9=(50-22)÷4=62÷8=27÷5=85-79=240+68=42-2×3=36÷4=47÷8=380-50=685+200=56÷(4×2)=54÷6=700-316=261+425=400+1400=(9-4)×9=50÷8=210+356=132+368=40-3×7=7+7÷7=40÷7=550+240=120+480=800-132=18÷3×3=5×7=45÷7=35÷8=397+211=8÷(83-75)=49÷7=20÷6=54÷6=610-370=(55-10)÷5=9×6=30÷8=67÷9=39÷4=30-8×3=54-26=64+36=30÷7=32+26=80-7×9=37÷8=44-7=23÷4=95-38=48+7×7=6×8=64÷8=56÷7=82-38=54+19=北师大版二年级数学下册口算练习(二)班级座号姓名48+12=8×7=42÷6=47÷9=36÷(54-48)=27+29=