Question

0.25×13+2.5×1.3+2.5×0.14怎么简便运算？

Answer 1

=2.5x1.3+2.5x1.3+2.5×0.14
=2.5x(1.3+1.3+0.14)
=2.5x2.74
=2.5x4x0.685
=10×0.685
=6.85

Answer 2

0.25×13+2.5×1.3+2.5×0.14
＝3.25+3.25+0.35
＝6.85

Answer 3

楼主是不是打错了，0.14，1.4 如果是直接2.5×(1.3+1.3+1.4)=10 如果不是也可以这样的方法 2.5×(1.3+1.3+0.14)=6.85

Answer 4

原式
=2.5×1.3+2.5×1.3+2.5×0.14
=2.5×（1.3+1.3+0.14）
=2.5×2.74
=6.85

Answer 5

原式等于0.25*13+0.25*13+0.25*1.4

=0.25*(13+13+1.4)=0.25*27.4

=0.25*2*13.7=0.5*13.7=13.7/2=6.85。。