混合运算．（写出计算过程）
28.7﹣14.7÷1.4 0.25×4.56×40 （1.7+3.3÷5）×0.2
0.45+0.15×997 12×0.25+8.8×2.5 （3﹣1.6）÷2.5×0.1．
相关试题
=
=
=
=
= 1﹣
=
= 1÷0.25%=
=
=
= 1
= 2.3÷0.3=
+
=
+
= 2.4×0.5= 0.9÷0.03=
=
÷
=
×
= 0.4×0.12=
+
= 
÷5= +
﹣
+= 1.25×8=
0.15×1.2+3.8×15%= 2﹣
÷
= 0.25+0.75= 
+×0=
（﹣
）×
= 4505÷5= 24.3﹣8.87﹣0.13= ．
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=
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