Question

2.9×0.45+2.9x0.42+0.29x1.3简便计算？

Answer 1

2.9×0.45+2.9x0.42+0.29x1.3简便计算，把0.29换算成2.9，1.3换算成0.13，
2.9×0.45+2.9x0.42+2.9x0.13
=2.9x（0.45+0.42+0.13）
=2.9x1=2.9

Answer 2

2.9*0.45+2.9*4.42+2.9*1.3
=2.9*(0.45+0.42+1.3)
=2.9*2.17
=6.293

Answer 3

2.9× (0.45+0.42+0.13）