58×52+58×50-58×2
解:58×52+58×50-58×2,
=58×(52+50-2),
=58×100,
=5800.
分析:通過(guò)觀察,此題可運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算.
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)算定律或運(yùn)算技巧,巧妙解答.
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