用简便方法计算．
6.45×102 0.47×0.5×0.8 0.46×1.9+0.54×1.9
0.027+9.9×0.27 15.8×69.3﹣68.3×15.8 1.25×32×2.5．
相关试题
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= 11
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= 0÷1.2=
=
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=
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=
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= 54
=直接写出得数
×
=
×
=
×18=
÷8=
6÷
=
×
×
=
÷
=
÷
=
÷
÷
= 0.25+
=
﹣
=
÷
×
=
÷
=
×
= 8﹣4÷
=
﹣
=
÷14= 12×（
﹣
）= 5%×5=
+
+
+
=
3.75+
= 63%﹣27%=（1﹣20%）÷20%= 0.4÷
=
×1.8=×25%=
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=
=
=
=
=
×
= 16×
=
÷
÷33= 1﹣25%= 75%+0.25=
﹣
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