3.87+2.5x1.08+1.13简便方法如下
3.87+2.5x1.08+1.13
＝3.87+2.5×（1+0.08）+1.13
＝3.87+2.5+0.2+1.13
＝（3.87+1.13）+2.7
＝5+2.7
＝7.7
3.87+2.5x1.08+1.13简便方法
3.87+2.5x1.08+1.13
=3.87+1.13+2.5x1.08
=3.87+1.13+2.5x1+2.5×0.08
=(3.87+1.13)+2.5+0.2
=5+2.5+0.2
=7.7
解：3.87+2.5*1.08+1.13=3.87+1.13+2.5*（1+0.08）=5+2.5+0.2=7.7。
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024