承德汽车网

0.25Ⅹ1.8十3.9用简便算法怎么算

    发布时间:2019-09-17

    12×0.25×3.3
    =3x4x0.25x3.3
    =3x3.3x(4x0.25)
    =9.9x1
    =9.9

    回复:

    3.9-0.3×0.4-0.25
    =3.9-0.12-0.25
    =3.9-(0.12+0.25)
    =3.9-0.37
    =3.53

    回复:

    0.25×3.9 +0.025=0·025×39+0.025=0·025×(39+1) =0·025×40=1

    回复:

    答 案 及 过 程 详 见 图 示

    回复:

    2.5x3.9十0.25简便计算不知道 2.5x3.9十0.25 =2.5*3.9+2.5*0.1 =2.5*(3.9+0.1) =2.5*4 =10 乘法分配律

    回复:

    39×0.14-3.9×0.4用简便方法计算 解答: 39×0.14-3.9×0.4 =39x0.14-39x0.04 =39x(0.14-0.04) =39x0.1 =3.9

    回复:

    0.25×3.9这道题能简便计算吗? 0.25×3.9 =0.25*(4-0.1) =0.25*4-0.25*0.1 =1-0.025 =0.975

    回复:

    3.9-0.3×0.4-0.25 =3.9-0.12-0.25 =3.9-(0.12+0.25) =3.9-0.37 =3.53

    回复:

    运用乘法交换律和结合律 3.9x8.6+3.9x3.4-3.9x2 =3.9×(8.6+3.4-2) =3.9×10 =39 加油哦

    回复:

    1、0.4x(2.5-0.25)+2.9 =2.5*0.4-0.4*0.25+2.9 =1-0.1+2.9 =3.9-0.1 =3.8 2、1.25-1.25x0.8 =1.25*(1-0.8) =1.25*0.2 =0.25 3、11.25+11.25x0.8 =11.25*2-11.25*0.2 =22.5-2.25 =20.25 4、(0.25+2.5+25)x0.8 =(0.25+2.5+25)-(0.25+2.5+25...

    回复:

    0.25×3.9+0.25 =0.25*(4-0.1)+0.25 =1-0.025+0.25 =1.225

    回复:

    12×0.25×3.3 =3x4x0.25x3.3 =3x3.3x(4x0.25) =9.9x1 =9.9

      上一篇:问一下男生们,那个占据了你大半个青春的女生,那个很爱的初恋后来却没在一起。多年后如今成熟甚至成家, 下一篇:如何设置el表达式的值只出现一次

      返回主页:承德汽车网

      本文网址:http://0314auto.cn/view-208056-1.html
      信息删除