Question

Calculează respectând ordinea efectuării parantezelor
a) 255 : ( 65 - 50 ) - ( 80 : 4 - 256 x 0 ) : 2 =

b) (750 x 308 - 375 x 208 ) : ( 179 x 5 + 630 : 6 ) =

c) [ 3 x 100 - ( 5 x 10 x 2 - 8 x 10 )] x 25 : 10 =

d) 450 : 6 x 5 + ( 38 x 100 - 2.879 ) =

e) 412.720 - [( 918 : 9 ) x ( 1.200 - 24 x 45) - 150 =


Va rog din tot sufletul.!!

Dau coroana!!!!

Answer 1

a. 255 : (65 - 50) - (80 : 4 - 256 x 0) : 2=

= 255 : 15 - (20 - 0) : 2=

= 17 - 20 : 2=

= 17 - 10=

= 7

b.(750 x 308 - 375 x 208) : (179 x 5 + 630 : 6)=

=(231000 - 78000) : (895 + 105)=

=153000 : 1000=

=153

c.[3 x 100 -(5 x 10 x 2 - 8 x 10)] x 25 : 10=

=[300 - (50 x 2 - 80)] x 25 : 10=

= [300 - (100 - 80) x 25 : 10=

=(300 - 20) x 25 : 10=

= 280 x 25 : 10=

= 7000 : 10=

=700

d. 450 : 6 x 5 + (38 x 100 - 2879)=

=75 x 5 + (3800 - 2879)=

=375 + 921=

=1296

e. 412720 - [(918 : 9) x (1200 - 24 x 45)] - 150=

=412720 - [102 x (1200 - 1080)] - 150=

=412720 - (102 x 120) - 150=

=412720 - 12240 - 150=

=400480 - 150=

=400330

Sper ca te-am ajutat!

Succes!