Question

observa exercitile calculeaza apoi compara rezultatele Justifica rezultatele obtinute

428+128:4=
(428+128):4=

4845-375:5=
(4845-375):5=

64+36:36+64=
(64+36):(36+64)=

va rog ajutatima !!

Answer 1

Explicație pas cu pas:

428 + 128 : 4 =

= 428 + 32

= 460

128 : 4 = 32

12

-------

==8

   8

--------

   =

( 428 + 128 ) : 4 =

= 556 : 4

= 139

556 : 4 = 139

4

-----

15

12

-------

=36

 36

--------

  ==

---------------------------------------------

4845 - 375 : 5 =

= 4845 - 75

= 4770

375 : 5 = 75

35

-------

=25

 25

---------

  ==

( 4845 - 375 ) : 5 =

= 4470 : 5

= 894

4470 : 5 = 894

40

---------

=47

 45

-----------

  =20

    20

-------------

     ==

--------------------------------------------

64 + 36 : 36 + 64 =

= 64 + 1 + 64

= 65 + 64

= 129

( 64 + 36 ) : ( 36 + 64 ) =

= 100 : 100

= 1

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