简便运算:75*4.67+17.9*2.5

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 02:50:05
简便运算:75*4.67+17.9*2.5

简便运算:75*4.67+17.9*2.5
简便运算:75*4.67+17.9*2.5

简便运算:75*4.67+17.9*2.5
解】原式=25×14.01十25×1.79
=25×15.8
=1580÷4=395

75*4.67+17.9*2.5
=2.5*140.1+17.9*2.5
=2.5*(140.1+17.9)
=2.5*158
=158÷0.4
=395