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3.375加0.625的和乘3.32乘25简便计算

按正常计算就65.5,按你说的顺序就161.3333333

原式 =3.375x0.97+0.97x6.625 =(3.375+6.625)x0.97 =10x0.97 =9.7 供参考。

31/4-3.375+2.25-5/8 =7.75-3.375+2.25-0.625 =(7.75+2.25)-(3.375+0.625) =10-4 =6

4*25*3+75=375 前面算出来是整数100,后面都比较简单的。

3/8×1.32-0.375+3/8×1.48用简便方法计算 =3/8x1.32-3/8+3/8x1.48 =3/8x(1.32-1+1.48) =3/8x1.8 =3/8x9/5 =27/40

三又四分之十五乘一点二五加37.5乘0.975,减375% =3+3.75x1.25+37.5x0.975-3.75 =3+3.75x(1.25+9.75-1) =3+3.75x10 =3+37.5 =40.5 请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!谢谢管理员推荐采纳!! 朋友,请【采纳答案】,...

3.75

=0.375×99+0.375 =0.375×(99+1) =0.375×100 =37.5

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