3.6×0.6+
35
×5.4+60%
分析:把分?jǐn)?shù)和百分?jǐn)?shù)化為小數(shù),運(yùn)用乘法分配律簡(jiǎn)算.
解答:解:3.6×0.6+
3
5
×5.4+60%
=3.6×0.6+0.6×5.4+0.6
=0.6×(3.6+5.4+1)
=0.6×10
=6.
點(diǎn)評(píng):注意觀察題目中數(shù)字構(gòu)成的特點(diǎn)和規(guī)律,善于靈活運(yùn)用運(yùn)算定律,巧妙解答.
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4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=
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