Question

Calculează:



repede va rogg dau coroana!!!!!​

Answer 1

a) 256 -[70+(70+28)]

256 - (70+98)

256 - 168

88

b) (87-57)×[(376:4-2):2]

30 × [(94-2):2]

30 × (92:2)

30 × 46

1380

c) 2×500 - [80+(247×4-801:9)-300]

1000 - [80+(988-89)-300]

1000 - (80 + 899 - 300)

1000 - (979- 300)

1000 - 679

321

d) 1000 + [( 39×5 +79×10):5+343]:6-300

1000 + [(195 + 790) :5 +343] : 6 - 300

1000 + (985 : 5 +343) :6 -300

1000 + (197+343):6 - 300

1000 + 540:6-300

1000 + 90 - 300

1090 -300

790

e) [(89×100-500)×67+101]×(100-10×10)

[(8900 - 500) × 67 + 101] × (100-100)

(8400×67+ 101) × 0

0

f) [(282:3-2):2]×(500-25×4×5)

[(94-2):2] × (500- 100×5)

(92:2) × (500-500)

46 × 0

0