72-42:21.3+15 79.27+79.70+79.3

2 bình luận về “72-42:21.3+15 79.27+79.70+79.3”

1. #wdr

   72-42:21.3+15

   =72-6+15

   =81

   —-

   79.27+79.70+79.3

   = 79.(27+70+3)

   =79.100

   =7900

    

   Trả lời
2. 72 – 42 : 21 .3 + 15

   = 72 – 42 : 7 + 15

   = 72 – 6 + 15

   = 66 + 15

   = 85

   ——————————

   79 . 27 + 79 . 70 + 79 .3

   = 79 . ( 27 + 70 + 3)

   = 79 .100

   = 7900

   Trả lời