Question

56.5x9.9+56.5怎么简算,拜托!求过程。

Answer 1

56.5x9.9+56.5x0.1 （9.9+0.1）x56.5 10x56.5 565

Answer 2

 

Answer 3

 

Answer 4

56.5乘10加56.5乘0.9

追问

10加0.9=10.9

Answer 5

56.5×(9.9+1)=615.85