5.8x(3.87-0.125)x8的简便方法
5.8x(3.87-0.125)x8的简便方法
5.8X(3.87-0.125)X8
=5.8X8X3.87-5.8X0.125X8
=46.4X(4-0.13)-5.8X1
=46.4X4-46.4X0.1-46.4X0.03-5.8
=185.6-4.64-1.392-5.8
=185.6-11.832
=185.6-12+0.168
=173.6+0.168
=173.768
5.8X（3.87-0.13） 4.2X3.74的简便方法
5.8X（3.87-0.13）+ 4.2X3.74
=5.8X3.74 + 4.2X3.74
=(5.8+4.2)X3.74
=10X3.74
=37.4
你的式子少个加号
5.8X(99十9)的简便方法
5.8X(99十9)的简便方法
=5.8x99+5.8x9
=5.8x100-5.8+5.8x10-5.8
=580+58-5.8x2
=639-11.6
=627.4
5.8x8.5＋5.8x0.5＋5.8简便方法计算
5.8x8.5＋5.8x0.5＋5.8
=5.8*（8.5+0.5+1）
=5.8*10
=58
其实，你们现在这个阶段的所谓的简单的运算就是提取公因数
0.83十0.125x7.8x8用简便方法
0.83十0.125x7.8x8
=0.83十（0.125×8）x7.8
=0.83十1x7.8
=0.83+7.8
=8.63
用简便方法计算5.8x8.5+5.8x0.5+5.8
5.8x8.5+5.8x0.5+5.8
=5.8x（8.5+0.5+1）
=5.8x10
=58
5.8x0.125x4简便方法怎么算?
=（2.9*2）*0.125*4
=2.9*（2*4*0.125）
=2.9*（8*0.125）
=2.9*1
=2.9
16x0.125x8的简便方法
16x0.125x8
=16x（0.125x8）
=16x1
=16
0.4x8x(0.125 2.5)的简便计算方法
原式
=0.4x8x(0.125+2.5)
=0.4x8x0.125+0.4x8x2.5
=0.4x(8x0.125)+(0.4x2.5)x8
=0.4x1+1x8
=0.4+8
=8.4
供参考。
0.125x5.6x8的简便方法
0.125x5.6x8
=0.125x8x5.6
=1x5.6
=5.6
