23.75x3.987+6.013x92.7+6.832x39.87=? 要求用简便运算,
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经观察,92.7应该是92.07吧!
23.75x3.987+6.013x92.07+6.832x39.87
=3.987x(23.75+68.32)+6.013x92.07
=3.987x92.07+6.013x92.07
=92.07x(3.987+6.013)
=92.07x10.000
=920.7
23.75x3.987+6.013x92.07+6.832x39.87
=3.987x(23.75+68.32)+6.013x92.07
=3.987x92.07+6.013x92.07
=92.07x(3.987+6.013)
=92.07x10.000
=920.7
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