数学题(不来会后悔的!)0.279x(37.2+20.6+61.8+5.4)x8.88除279=(简便运算,大家帮我想一想)

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数学题(不来会后悔的!)0.279x(37.2+20.6+61.8+5.4)x8.88除279=(简便运算,大家帮我想一想)数学题(不来会后悔的!)0.279x(37.2+20.6+61.8+5.4)

数学题(不来会后悔的!)0.279x(37.2+20.6+61.8+5.4)x8.88除279=(简便运算,大家帮我想一想)
数学题(不来会后悔的!)
0.279x(37.2+20.6+61.8+5.4)x8.88除279=(简便运算,大家帮我想一想)

数学题(不来会后悔的!)0.279x(37.2+20.6+61.8+5.4)x8.88除279=(简便运算,大家帮我想一想)
0.279x(37.2+20.6+61.8+5.4)x8.88除279
=0.279÷279×【(37.2+61.8)+(20.6+5.4)】×8.88
=0.001×125×8.88
=0.001×125×8×1.11
=0.001×1000×1.11
=1.11

没这功夫。。。

0.279*(37.2+20.6+61.8+5.4)*8.88/279
=0.001*125*8.88
=0.125*8.88
=1.11

1.11

0.279*(37.2+20.6+61.8+5.4)*8.88/279
=0.279/279 * (37.2+61.8+ 20.6+5.4)*80.88
=0.001 * (99+26)*8.88
=0.001 * 125*8.88
=0.001 * 125*(8+0.8+0.08)
=0.001 * (1000+100+10)
=0.001 * 1110
=1.11

0.279*(37.2+20.6+61.8+5.4)*8.88/279
=0.279/279*(37.2+61.8+20.6+5.4)*8.88
=0.001*8.88*(99+26)
=0.008*1.11*125
=0.008*125*1.11
=1.11
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