Question

Calculeaza respectand ordinea efectuarii operatiilor.<br />
800-721:7-69×8=<br />
230+424:4×5=<br />
(800-721):3+93×6=<br />
302×4-(421+118):7<br />
Va rog ajuratima repede <br />

Answer 1

800-721:7-69×8=
800-103-552=
697-552=
145

230+424:4×5=
230+106×5=
230+530=760

(800-758):3+93×6=
42:3+558=
14+558=
572

302×4-(421+118):7=
1208-539:7=
1208-77=
1131


Coroana?

Answer 2

800 - 721 : 7 - 69 x 8 = 145

= 800 - 103 - 552 =

= 697 - 552 =

= 145

__________

230 + 424 : 4 x 5 = 760

= 230 + 106 x 5 =

= 230 + 530 =

= 760

______________

( 800 - 721 ) : 3 + 93 x 6 =

= 79 : 3 + 558 =

= 26,( 3) + 558 =

= 584,( 3)

Daca exercitiul e postat gresit, fiind pentru inv. primar, atunci voi corecta 721 cu 731,astfel:

( 800 - 731 ) : 3 + 93 x 6 = 581

= 69 : 3 + 558 =

= 23 + 558 =

= 581

______________

302 x 4 - ( 421 + 118 ) : 7 = 1 131

= 1 208 - 539 : 7 =

= 1 208 - 77 =

= 1 131