bmfs.net
当前位置:首页 >> (32+16)x20用简便怎么算 >>

(32+16)x20用简便怎么算

=48*20 =(40+8)*20 =40*20+8*20 =800+160 =960

960÷[(32+16)x20] =960÷48÷20 =20÷20 =1

76-(32+16)用简便方法计算 =76-16-32 =60-32 =28

32X16+14X32 =32X(16+14) =32X30 =960

[(960÷32)+16]x20脱式计算 [(960÷32)+16]x20 =(30+16)*20 =30*20+16*20 =600+320 =920

假设:s=1/2+1/4+1/8+1/16+1/32+1/64 ;则:2s=1+1/2+1/4+1/16+1/32 ;用2s-s(相同项全部抵消,只剩首位2项) ;s=1-1/64=63/64。 1.分式加减法法则:(1)通分:把异分母的分式化为同分母分式的过程,叫做通分。 (2)同分母分式的加减法法则:...

原式=32X16+32+32X83 =32X(16+1+83) =32X100 =3200

可以用求和公式计算,稍等一下。

因为2^0+2^1+2^2+...+2^n=2^(n+1)-1 所以,n=8代入上式: 1+2+4+8+16+32+64+128+256=2^9-1=511

32×16+16×32 =32*(16+16) =32*32 =32^2 =1024

网站首页 | 网站地图
All rights reserved Powered by www.bmfs.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com