Question

a) 38, 92 + 12,7 x 3,2                       b) (128,4 - 73,2): 2,4 - 18,32

                                    c) 8,64: (1,46 + 3,34) + 6,32

Answer 1

a) 38, 92 + 12,7 x 3,2    

=  38,92 + 40,64

= 79.56

 

b) (128,4 - 73,2): 2,4 - 18,32

= 55.2: 2,4 - 18,32

= 23  - 18,32

= 4.68

 

 c) 8,64: (1,46 + 3,34) + 6,32

= 8,64: 4.8 + 6,32

= 1,8 + 6,32

= 8.12

Answer 2

a: =38,92+40,64=79,56

b: =55,2:2,4-18,32=23-18,32=4,68

c: =8,64:4,8+6,32

=1,8+6,32

=8,12

Answer 3

a,=38,92+40,64

=79,56

b,=55,2:2,4-18,32

=23-18,32

=4,68

c,=8,64:4,8+6,32

=1,8+6,32

=8,12