9.86×6.7+33×0.986用简便方法计算?
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先分析算式,有9.86和0.986,只差十倍,可以考虑提取公因式。
再对算式做个变形:
9.86×6.7+33×0.986
=0.986x67+33×0.986
=0.986x(67+33)
=0.986x100
=98.6
再对算式做个变形:
9.86×6.7+33×0.986
=0.986x67+33×0.986
=0.986x(67+33)
=0.986x100
=98.6
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9.86×6.7+33×0.986
=9.86×6.7+3.3×9.86
=9.86×(6.7+3.3)
=9.86×10
=98.6
=9.86×6.7+3.3×9.86
=9.86×(6.7+3.3)
=9.86×10
=98.6
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9.86×6.7+33×0.986
=0.986x67+33x0.986
=0.986x(67+33)
=0.986x100
=98.6。
=0.986x67+33x0.986
=0.986x(67+33)
=0.986x100
=98.6。
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