Question

Ap dung tinh chat phan phoi doi voi phep cong:

              13.12 ;   53.11 ;    38.101

Answer 1

13.12 = 13.(10+2) = 13.10 + 13.2
= 130 + 26 = 156
53.11= 53.(10+1) = 53.10 + 53.1
= 530 + 53 = 583
38.101 = 38.(100+1) = 38.100 + 38.1
= 3800 + 38 = 3838