7.85+2.34-0.58+4.66简便运算帮帮忙吧

问题描述:

7.85+2.34-0.58+4.66简便运算
帮帮忙吧

7.85+2.34-0.58+4.66
=7.85+(2.34+4.66)-0.58
=7.85+7-0.58
=14.85-0.58
=14.27

7.85+2.34—0.58+4.66
=7.85—0.58+(2.34+4.66)
=7.85—0.58+7
=14.85—0.58
=14.27
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