7*0.17/0.37*27 *7142.85=?
7*0.17/0.37*27 *7142.85=?
((7 * 0.17) / 0.37) * 27 * 7 142.85 = 620 269.65
7 * 0.17=1.19
1.19/ 0.37= 3.21621622
3.21621622* 27 = 86.8378379
86.8378379* 7 142.85 = 620 269.65
0.925/0.17/0.28的简便演算法
=0.925*(0.28/0.17)
=(10-0.075)*(28/17)
=(10-0.07+0.005)*((20+8)/17)
=(200+80-0.14-0.56+0.1+0.04)/17
=(280-0.7+0.1+0.04)/17
=(280-0.6+0.04)/17
=279.44/17
0.24/0.17/6.2/4.8x3.4x0.124
0.24×0.17×6.2÷（4.8x3.4x0.124）
=（0.24÷4.8）×（0.17÷3.4）×（6.2÷0.124）
=0.05×0.2×50
=0.01×50
=0.5
7.6*0.21/5.1*0.17/0.38/0.7的简算方法 - 百度
7.6x0.21÷5.1x0.17÷0.38÷0.7
=7.6x0.21x0.17÷5.1÷0.38÷0.7
=38x0.2x0.7x0.3x17x0.01÷（5.1x0.38x0.7）
=0.2x0.3x0.01x38x0.7x17÷（17x0.3x38x0.01x0.7)
=0.2
谢谢，请采纳
（0.37+0.29+2）*（0.37+0.29+0.17）—（2+0.37+0.29+0.17)*(0.37+0.29)= 过程不要太多
原式=(0.37+0.29+2)*(0.37+0.29)+(0.37+0.29+2)*0.17-[(2+0.37+0.29)*(0.37+0.29)+0.17* (0.37+0.29)]
=(0.37+0.29+2)*0.17-0.17*(0.37+0.29)
=0.17*2
=0.34
0.24/0.17/6.2/4.8x3.4x0.124这题如何解
0.24/0.17/6.2/4.8x3.4x0.124=0.02 从左到右进行计算。
希望能够帮到你。
奥数计算题：（0.37+0.29+2）×﹙0.37＋0.29＋0.17﹚－﹙2＋0.37＋0.29＋0.17﹚×﹙0.37＋0.2﹚
（0.37+0.29+2）×﹙0.37＋0.29＋0.17﹚－﹙2＋0.37＋0.29＋0.17﹚×﹙0.37＋0.29﹚
设0.37＋0.29=a
则原式可化为
(a+2)(a+0.17)-(2+a+0.17)a
=a²+0.17a+2a+0.34-2a-a²-0.17a
=0.34
或者
[(0.37＋0.29)+2][(0.37＋0.29)+0.17]-[2+(0.37＋0.29)+0.17](0.37＋0.29)
=(0.37＋0.29)²+0.17(0.37＋0.29)+2(0.37＋0.29)+0.34-2(0.37＋0.29)-(0.37＋0.29)²-0.17(0.37＋0.29)
=0.34
计算0.17/0.83 0.017/1.7时,用乘法什么律最简便
计算0.17/0.83 0.017/1.7时,用乘法什么律最简便
0.17*0.83+0.017*1.7
=0.17*0.83+0.17*0.17
=0.17*（0.83+0.17）
=0.17*1
=0.17
乘法分配律
