Question

5.8×0.45+0.58×4.2+0.058×13的简便运算？

Answer 1

根据观察发现，算式中液哪5.8、0.58、0.058存在倍数关系，祥埋渗可谨脊以进行简便运算:
5.8*0.45+0.58*4.2+0.058*13
=0.58*4.5+0.58*4.2+0.58*1.3
=0.58*(4.5+4.2+1.3)
=0.58*10
=5.8

Answer 2

这种题宽锋闭目可以用加减乘除运算的分配律和结合律进慎裂行简便计算基昌：
5.8×0.45+0.58×4.2+0.058×13
=0.58x4.5+0.58x4.2+0.58x1.3
=0.58x(4.5+4.2+1.3)
=0.58x10
=5.8

Answer 3

解运扒，李悄迟原式哪李=5.8x0.45+5.8x0.1x4.2+0.058x100x0.13
=5.8x0.45+5.8x(0.1x4.2)+(0.058x100)x0.13
=5.8x(0.45+0.42+0.13)
=5.8x1
=5.8

Answer 4

5.8×0.45+0.58×4.2+0.058×13
=58×45×0.001+58×42×0.001+58×13×0.001
=58×0.001×（45+42+13）
=58×0.001×100
=58×0.1
=5.8
乘法分配燃清信律皮轮的逆运正仔算

Answer 5

5.8×0.45+0.58×4.2+0.058×13
＝5.8×0.45+5.8×0.1×4.2+5.8×0.01×13
＝5.8×(0.45+0.42+0.13)
＝察答5.8×1
＝扮没枯厅洞5.8