Question

Calculează, respectând ordinea operaţiilor:
a) 99:(101-90)
1000 - (72:3+ 452)
(107 +13) -(87 + 9)
310 + 188 ( 954:9:2)
(270 x 4+ 139 x 3) - 5 x 178
100 x ( 22 x 2:4-4:4)
800 - (46: 2 x 10 + 70)
b) [(75 + 5) 9-20] : 100
401 - 2x [(107 + 123) -(104 +8)]
586 + 5 x [138 + 936:(321 - 317)]
[(3 x 167 - 3) 153)] - (450 x 2 +12)
416 x 4 - 518:[(38 x 0 + 200): 100)
729 + 3 000 : 100 (76+ (893 - 809)]
[(6 251 - 4999) 8 + 600: 15] x 0
Va ro

Answer 1

Răspuns:

a) 99:(101-90) = 99:11 = 9

1000 - (72:3+ 452) = 1000 - (24+452)=1000-476=524

(107 +13) -(87 + 9) = 120 - 96 = 24

310+188(954:9:2)=310+188(106:2)=310+188×53=310+9964=

=10274

(270 x 4+ 139 x 3) - 5 x 178=1080+417-890 =1497-890=607

100 x ( 22 x 2:4-4:4) = 100×(44:4-1)=100×10=1000

800 - (46: 2 x 10 + 70) =800-(23×10+70)=800-300=500

b) [(75 + 5) 9-20] : 100 =80×9-20=720-20=700

401 - 2x [(107 + 123) -(104 +8)] =401-2×(230-112)=401-2×118=

=401-236=165

586 + 5 x [138 + 936:(321 - 317)] =586+5×(138+936:4)=

=586+5×(138+234)=586+5×372=586+1860=2446

[(3 x 167 - 3) 153)] - (450 x 2 +12) =(501-3)×153-912=

=498×153-912=76194-912=75282

416 x 4 - 518:[(38 x 0 + 200): 100) =1664-518:(200:100)=

=1664-518:2=1664-259=1405

729 + 3 000 : 100 (76+ (893 - 809)] =729+30(76+84)=

=729+30×160=729+4800=5529

[(6 251 - 4999) 8 + 600: 15] x 0 (pt ca tot a fost inmultit cu 0, rezultatul va fi 0)