二年級數(shù)學口算題：乘加減兩步

乘加減兩步(不進、不退)
    32+5×4= 22+6×4= 53+5×5=
    72+1×3= 80+5×1= 64-9×7=
    7×4+51= 4×5+25= 7×8-25=
    6×6-12= 11+7×8= 78-9×7=
    41+6×2= 3+9×9= 63+8×4=
    3×4+10= 83+1×6= 6×5+37=