Question

5,4 x1,2 - 1,06 x4 + 15,2 x2,5

8,3 x [ 6,25 - 1,27] : 0,25

[34,08 -41,2 x0,75] x 10,2

[31,02+ 1998 x 0,01 ] : 0,25

LƯU Ý :

TRÌNH BẦY CÁCH GIẢI RÕ RÀNG

Answer 1

a) 5,4 x 1,2 - 1,06 x4 + 15,2 x 2,5                         b) 8,3 x (6,25- 1,27): 0,25

= 6,48- 4,24 + 38                                                = (8,3 x 4,98) : 0,25

= 2,24 + 38                                                        = 41,334 : 0,25

= 40,24                                                             = 165,336

c) (34,08 - 41,2 x 0,75 ) x 10,2                          d) (31,02+ 1998x 0,01): 0,25

= 3,18 x 10,2                                                     = 51 : 0,25

= 32,436                                                          = 204