下面的计算对吗？把不对的改正过来． ； ； ．
直接写得数．﹣=÷=×=×= 10×=×=÷=÷= 15×=÷=+=÷22=
直接写出得数．=========．
直接写出得数．÷10=×= 1÷= 8×= 1+=÷=×÷= 1÷6×=
直接写得数． 4×30%=﹣= 44÷= 0.45÷5= 10﹣0.57﹣0.43=×÷×=﹣×= 0.68++0.32= 8.37×2.4÷1.9×0= 1÷5+=
直接写得数．==×30=÷5= 2÷= 470﹣407= 13×50= 8.64﹣5.04= 500÷25= 4.57+5.43=
﹣
=
÷
=
×
=
×
= 10×
=
×
=
÷
=
÷
= 15×
=
÷
=
+
=
÷22=
=
=
=
=
=
=
=
=
=
．
÷10=
×
= 1÷
= 8×
=
=
÷
=
×
÷
=
﹣
= 44÷
= 0.45÷5=
×
÷×
=
﹣×= 0.68++0.32=
=﹣= 44÷= 0.45÷5=×÷×=﹣×= 0.68++0.32==
=
=
×30=
÷5= 2÷
=
粤公网安备 44130202000953号