3.04乘8.7减3.24乘2.9加5.8乘6.96怎么简便算

3.04*8.7-3.24*2.9+5.8*6.96
=3.04*2.9*3-3.24*2.9+2.9*2*6.96
=(3.04*3-3.24+6.96*2)*2.9
=(3.04*3-3.24+3.24*3*2)*2.9
=(3.04*3+3.24*5)*2.9
=25.32*2.9
=25.32*3-25.32*0.1
=73.428

你的式子是这样的吧
3.04*8.7-3.24*2.9+5.8*6.96
=9.12*2.9-3.24*2.9+2.9*13.92（就是把2.9的倍数转化为2.9，这样就可以提出了）
=2.9*19.8
=73.428
希望你满意我的回答

8.7 = 5.8 + 2.9
3.04×8.7-3.24×2.9+5.8×6.96
= 3.04×5.8 + 3.04×2.9 - 3.24×2.9 + 5.8×6.96
= （3.04×5.8 + 5.8×6.96）+ （3.04×2.9 - 3.24×2.9）
= 10×5.8 - 0.2×2.9
= 58 - 0.58
= 57.42

3.04乘8.7减3.24乘2.9加5.8乘6.96
=3.04×8.7-3.24×2.9+5.8×6.96
=3.04×(3×2.9)-3.24×2.9+(2×2.9)×6.96
=(3.04×3)×2.9-3.24×2.9+2.9×(2×6.96)
=……

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