Question

递等式简便方式?

Answer 1

 

Answer 2

8.5×10.1 =8.5×(10.0+0.1) =8.5×10+8.5×0.1 =85+0.85 =85.85

Answer 3

＝8.5×10＋8.5×0.1
＝85＋0.85
＝85.85

Answer 4

8.5 ×10+ 8.5×0.1
=85+0.85
=85.85

Answer 5

8.5×10+8.5×0.1=85+0.85=85.85

Answer 6

8·5×10+8·5×0·5