a) (580-40:2×4):25+550 < 600
(580-20×4):25+550 < 600
(580-80):25+550 < 600
500:25+550 < 600
20+550 < 600
570 < 600 A
b) 300-2×[5×(70-78:3)]:8 > 250
300-2×(5×70-26):8 > 250
300-2×(350-26):8 > 250
300-2×324:8 > 250
300-648:8 > 250
300-81 > 250
219 > 250 F
c) [(3+47+50):4+91]:2 > 50
[(50+50):4+91]:2 > 50
(100:4+91):2 > 50
(25+91):2 > 50
116:2 > 50
58 > 50 A
d) [100×(25+50×4)+500]:10 < 3 000
[100×(25+200)+500]:10 < 3 000
(100×225+500):10 < 3 000
22 000:10 < 3 000
2 200 < 3 000 A
Sper ca te -am ajutat
