Tính: a) 4 1/5 + 3 2/5 b) 1/2 - 1/8 - 1/16 c) 426 x 305 d) 72 306 : 351
Giải thích
a) 415+325=215+175=385
b) 12−18−116=816−216−116=516
c) 426×305=129930
d) 72306:351=206
a) 415+325=215+175=385
b) 12−18−116=816−216−116=516
c) 426×305=129930
d) 72306:351=206