(53.74—17.49)*2.7怎么简算？
2个回答
展开全部
(53.74一17.49)ⅹ2.7
=36.25x2.7
=36.25x(3一0.3)
=36.25x3一36.25x0.3
=108.75一10.875
=108.75一11+0.125
=97.75+0.125
=97.875。
=36.25x2.7
=36.25x(3一0.3)
=36.25x3一36.25x0.3
=108.75一10.875
=108.75一11+0.125
=97.75+0.125
=97.875。
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展开全部
=（53.74-17.5+0.01）*2.7
=（53.74-13.5-4+0.01）*2.7
=（40.24-4+0.01）*2.7
=（36.24+0.01）*2.7
=36.25*2.7
=36.25（3-0.3）
=36.25*3-36.25*0.3
=108.75-10.875
=108.75-10.75-0.125
=98-0.125
=97.875
=（53.74-13.5-4+0.01）*2.7
=（40.24-4+0.01）*2.7
=（36.24+0.01）*2.7
=36.25*2.7
=36.25（3-0.3）
=36.25*3-36.25*0.3
=108.75-10.875
=108.75-10.75-0.125
=98-0.125
=97.875
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