www.qprq.net > "99.99×11.11+33.33×667"用简便运算怎么计算?

"99.99×11.11+33.33×667"用简便运算怎么计算?

99.99×11.11+33.33×667 =33.33×(33.33+667) =33.33×700.33 =3333×(7+0.003+0.0003) =23331+9.999+0.9999 =23341.9989

82×11+33×06=82x11+(3x6)x11=82x11+18x11=(82+18)x11=100x11=1100

=3333X(22.22+77.78) =3333X100 =333300

原式 =66.66x11.11+33.33x77.78 =33.33x2x11.11+33.33x77.78 =33.33x22.22+33.33x77.78 =33.33x(22.22+77.78) =33.33x100 =3333

99.99×11.11+33.33×66.67 =33.33×3×11.11+33.33×66.67 =33.33×(33.33+66.67) =3333

《生死约》:长路漫漫,芳草萋萋,生生死死,衷情难寄。肝肠寸断的苦等,舍生求死的别离。是天的不公,是命的捉弄,是死的苦斗,是生的抗争。旷古未闻的前世生死约,将留下多少字字蹄血的断肠声。

33*77+66*11=33(77+22)=33x100-33=3267

11.1×3.6+11.2×33.3、 =11.1x3x1.2+11.2x33.3 =33.3x(1.2+11.2) =33.3x12.4 =412.92

将33看成是3*11,所以33*33=11*11*3*3,口算有11*99,就是9-18-9=1089,诀窍是11和一个数相乘,就是按这个数的最高位开始相加写出来,如果中间任意两位相加和超过10,就向前一位+1,所以99乘以11,就是先写9,然后是9+9=18>10,向前进1位,9+1=1...

11*11*n^2=121*n^2

网站地图

All rights reserved Powered by www.qprq.net

copyright ©right 2010-2021。
www.qprq.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com