rpct.net
当前位置:首页 >> 简便计算2.51.7%2.50.8 >>

简便计算2.51.7%2.50.8

心(速)算法1+2+3+4+5+6+7+8+9。。。。。51=(1+51)+(2+50)+(3+49)+。。。。+(25+27)+26=52*25+26=13*4*25+26=13*100+26=1300+26=13262+4+6+8+10+.60=(2+60)+(4+60)+(5+58)+.+(30+32)=62*15=31*30=930数列求和法1+2+3+4+5+6+7+8+9。。。...

2.251.817.50.18简便计算 2.251.817.50.18 =2.25+7.5+(1.8+0.18) =9.75+1.98 =9.75+2-0.02 =11.73

(0.5*2.2)+(0.01*2.2)=1.1+0.022=1.122

2.19+6.48+0.51-1.38-5.48-0.62 =(2.19+0.51)+(6.48-5.48)-(1.38+0.62) =2.7+1-2 =3.7-2 =1.7

(12×21×45×10.2)÷(15×4×0.7×51) =(12÷4)×(21÷0.7)×(45÷15)×(10.2÷51) =3×30×3×0.2 =54

510➗(51x2) =510➗51➗2 =10➗2 =5

(8+0.8)×1.25 =8×1.25+0.8×1.25 =10+1 =11

86.7-(51.2-13.3) =86.7+13.3-51.2 =100-51.2 =48.8 希望能帮到你~

220分之51

(1)8.42+8.46+8.54+8.58,=(8.42+8.58)+(8.46+8.54),=17+17,=34;(2)51.26-8.76-1.24,=51.26-(8.76+1.24),=51.26-10,=41.26;(3)9.5+4.85-6.23,=14.35-6.23,=8.12;(4)125×7×32,=125×7×4×8,=125×8×(7×4),=1000×28,=2...

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