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9.9×4.5简便计算

9.9×4.5+0.45 =(9.9+0.1)×4.5 =10×4.5 =45 你好,本题已解答,如果满意 请点右下角“采纳答案”。

4.5×9×1.2 =4.5x2x0.6x9 =9x9x0.6 =81x0.6 =48.6 祝天天向上。

9.9x4.5+0.45的简便方法过程及方法 9.9x4.5+0.45 =4.5*9.9+4.5*0.1 =4.5*(9.9+0.1) =4.5*10 =45 乘法分配律

=4.5*2*9*0.6 =9*9*0.6 =81*0.6 =48.6 希望我的回答能帮助你, 如果你认可我的回答,敬请及时采纳, 在我回答的右上角点击【采纳答案】 , 若有疑问,可继续追问,谢谢

=0.45*99+0.45=0.45*(99+1)=45

=4.5×(10-0.1) =4.5×10-4.5×0.1 =45-0.45 =44.55

题干不全

4.5-7÷9-2/9 =4.5-7/9-2/9 =4.5-(7/9+2/9) =4.5-1 =3.5

解: 1.27+3.9+(9.33-4.5) =1.27+9.33+3.9-4.5 =10.6-4.5+3.9 =6.1+3.9 =10

4.5x9.8 =4.5x(10-0.2) =4.5x10-4.5x0.2 =45-0.9 =44.1

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