18.3×0.25+5.3÷0.4－7.13= 简便方法怎么算？谢谢
18.3×0.25+5.3÷0.4－7.13= 简便方法怎么算？谢谢
18.3×0.25+5.3÷0.4－7.13
=18.3×0.25+5.3÷2/5－7.13
=18.3×0.25+5.3×5/2－7.13
=18.3×0.25+5.3×2.5－7.13
=1.83×2.5+5.3×2.5－7.13
=2.5×（1.83+5.3）-7.13
=2.5×7.13-7.13×1
=7.13×（2.5-1）
=7.13×1.5
=10.695
计算18.3*0.25+5.3/0.4-7.13
18.3*0.25+5.3/0.4-7.13 =18.3/4+53/4-7.13 =71.3/4-71.3/10 =71.3(1/4-1/10) =71.3*3/20 =21.39/2 =10.695
18.3x0.25+5.3÷0.4-7.13
解：
18.3×0.25+5.3÷0.4-7.13
=4.575+5.3÷0.4-7.13
=4.575+13.25-7.13
=10.695
答案是：
10.695
计算：18.3×0.25+5.3÷0.4-3.13×2.5 小学奥数，简便计算
18.3×0.25+5.3÷0.4-3.13×2.5
＝1.83×2.5+5.3×2.5-3.13×2.5
＝（1.83+5.3-3.13）×2.5
＝4×2.5
＝10
本题重点是
5.3÷0.4＝5.3×2.5
18.3*0.25+5.3/0.4简便演算法
18.3*0.25+5.3/0.4
=1.83*2.5+5.3*2.5
=（1.83+5.3）*2.5
=7.33/0.4
=73.3/4
=18.325
18×0.25＋5.3×2.5＋7.3×2.5用简便方法算
=1.8X2.5＋5.3×2.5＋7.3×2.5
=2.5X(1.8+5.3+7.3)
=2.5X14.4
=36
18.3乘以0.25加5.3除0.4减7.13怎么算？
技巧就是你把除0.4换成乘2.5,用分配律!
原式=18.3X0.25+5.3X2.5-7.13
=(1.83+5.3)X2.5-7.13
=7.13X2.5-7.13
=7.13X(2.5-1)
=10.695
题出得真烂,数字一点也不整.
0.25*0.65*0.4简便方法计算
0.25*0.65*0.4
=0.25*0.4*0.65
=0.1*0.65
=0.065
8.4÷0.6+8.4÷0.4用简便方法怎么计算谢谢
8.4÷0.6+8.4÷0.4
=8.4（0.6+0.4）
=8.4
用简便方法计算35.2÷0.25÷0.4
35.2÷(0.25×0.4)=35.2÷0.1=352
