102×0点五七的简便计算
102×0点五七的简便计算 -
102×0点五七的简便计算答：102×0.57=100×0.57+2×0.57 =57+1.14 =58.14
=（9.23+6.62）（9.43+0.57）15.85+10 =25.85
102×0点五七的简便计算答：102×0.57=100×0.57+2×0.57 =57+1.14 =58.14
=（9.23+6.62）（9.43+0.57）15.85+10 =25.85
=6.79*（4.3+5.7）乘法分配律简便计算=6.79*10 =67.9
0.57×0.16 ＝0.57×0.8×0.2 ＝0.456×0.2 ＝0.0912
9九点四三减去括号六点二八减去一点五七括号 七点二八怎么简便
原式=99.43-（6.28-1.57）7.28 =99.43-6.28+1.57+7.28 =（99.43+1.57）（7.28-6.28)=101+1 =102
利用乘法分配律简算。分析式子都含有同一个数字即6.7，利用乘法分配律将6.7提出来，可以得到6.7×（1-0.33-0.57）6.7×0.1=0.67。
三点六乘两点五七简便方法 -
3.6×2.57=3.6×（2.5+0.07）3.6×2.5+3.6×0.07 =4×2.5×0.9+3×0.07+0.6×0.07 =9+0.21+0.042 =9.252
-2.56+4.03+6.57+(-5.41)+2.41 =6.57-2.56+4.03-(5.41-2.41)=4.01+4.03-3 =5.04
十七分之五七×五分之一+五分之三×十七分之五+十七分之五简便
5/17*1/5+3/5*5/17+5/17 =5/17(1/5+3/5+1)=5/17*9/5 =9/17
答：9.14减四点五七减一点四三=9.14-（4.57+1.43）9.14-6 =3.14