用竖式计算. (1)37.5﹣4.58= (2)6.9×0.54= (3)8.946+7.35=
18÷2=÷3=÷4=÷8=
计算:××;×12×;××;××;
××=
计算:××= ××= ×0×= ××=
直接写得数。××=××=××=××4=