9.9×0.57+0.57的简便运算？
9.9×0.57+0.57的简便运算?
9.9×0.57+0.57×0.1=0.57（9.9+0.1）=5.7。否则无法简便计算。9.9×0.57+0.57×0.1=0.57（9.9+0.1）=5.7
简便方法:0.57x9.9+0.057
5.7
0.57×9.9的简便算法是( ) A.0.57×10 - 0.57 B.0.57×...
0.57×9.9=0.57×(10-1)=0.57×10-0.57×0.1=5.7-0.057=5.643;故选:C.
递等式计算(写出必要的计算过程,能简便用简便方法计算...
递等式计算(写出必要的计算过程,能简便用简便方法计算)4.56-(1+0.4)×3.2 73×1.61+16.1×2.6+1.616.24×8×(0.47+0.25+0.53)38.4÷0.16-6.8×35+7.86.4×(125×0.125)[0.57...
9.9×0.7+0.57如何简便运算
9.9×0.7＋0.57 ＝（10-0.1）×0.7＋0.57 ＝10×0.7-0.1×0.7＋0.57 ＝7-0.07＋0.57 ＝6.93＋0.57 ＝7.5 这样算不知道怎么样 ...
0.57+0.057x9.9简便算式?
0.57+0.057X9.9 =（1+0.99）X0.57 =1.99X0.57 =（2-0.01）X0.57 =1.14-0.0057 =1.1343
...0.36×4.29+3.6×0.57+0.003695.95÷19 - 38.95÷19...
(1)47.5÷(47.5×0.5)=47.5÷47.5÷0.5=1÷0.5=2(2)2.7÷0.45÷0.2=2.7÷(0.45×0.2)=2.7÷0.09=30(3)0.36×4.29+3.6×0.57+0.0036=0.36×4.29+0.36×5.7+0.36×...
0.57+0.057×99怎样简便运算?
0.57+0.057×（100-1）=0.57+5.7-0.057=6.27-0.057=6.213 其实计算器算最简便
根据运算定律填空。2.3×0.57= 0.57×( )1.6×(0.25×...
2.3;1.6;0.25;0.23;12.7;17.3
简便计算。9.9×5.7+0.57,4.23×10.1 - 0.423,1.25×8.8...
1、9.9×5.7+0.57 =9.9×5.7+5.7×0.1 =(9.9+0.1)×5.7 =10×5.7=57 2、4.23×10.1-0.423 =4.23×10.1-4.23...