www.whkt.net > 0.65×6.4+0.36×6.5怎样用简便计算?

0.65×6.4+0.36×6.5怎样用简便计算?

原式=6.5*0.64-6.5*0.54+6.5*0.99=6.5*(0.64-0.54+0.99)=6.5*1.09=7.085望采纳,谢谢-0-

0.65*6.4-6.5*0.54+65*9% =6.5*0.64-6.5*0.54+6.5*0.9 =6.5*(0.64-0.54+0.9) =6.5*1 =6.5

0.65*6.4+0.65*5.4 =0.65x(6.4+5.4) =0.65x11.8 =0.65x10+0.65x1+0.65x0.8 =6.5+0.65+0.52 =7.67

0.65*6.4-6.5*0.54+6.5*9106.5*0.64-6.5*0.54+6.5*910=6.5X(0.64-0.54+910)=6.5X0.1+6.5X910=0.65+5915=5915.65

0.65*6.4-6.5*0.54+65*9%=0.65(6.4-5.4+9)=0.65*10=6.5(移动其他数的小数点位置,尽量调成具有相同因数的式子,然后用分配律和逆运算)

换算成6.5x0.64-6.5x0.54=6.5x(0.64-0.54)=6.5x0.1=0.65

你好!这是小数的提取公因式的算法,可以将0.65转换成6.5*0.1.这是最简便算法不用计算式都可以,想象一下0.1+9.9等于10,6.5乘10得65,具体版式如下:0.65+9.9*6.5=0.1*6.5+9.9*6.5=6.5*(0.1*+9.9)=6.5*10=65 希望可以帮到你请采纳谢谢!

0.65*6.4+0.64*5.4=0.64*6.4+0.64*3.6+0.01*6.4+1.8*0.64=0.64(6.4+3.6)+0.064+1.152=6.4+1,216=7.616望采纳

=0.65(0.83+0.17) 0.65*1 =0.65

65*9%+0.65*6.4-6.5*0.54=65*0.09+0.65*6.4-0.65*10*0.54=0.65*100*0.09+0.65*6.4-0.65*5.4=0.65*9+0.65*6.4-0.65*5.4=0.65*(9+6.4-5.4)=6.5

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