Question

va rog frumos ajutati-ma si pe mine

Answer 1

101)

a)
1,6×1/5+0,1:0,08=

=16/10×1/5+1/10:8/100=

=16/50 +1/10×100/8=

=16/50+10/8=

=4×16+25×10 tot asta supra /200=

=64+250 totul supra /200=

=314/200 (simplificat cu 2)=

=157/100=

=1,57


b)

(3,5-1,6)×2,1-0,654×0,002=

=(35/10-16/10)×21/10-654/1000×2/1000=

=19/10×21/10- 327×1totul supra/500×500=

=19×21 totul supra /10×10 -327/250000=

=399/100 -327/250000=

=2500×399-327 tot ăsta supra /250000=

=997500-327 totul supra /250000=

=997173/250000=

=3,988692

c)

(5/8+5,8)×0,25-1/4=

=(5/8+58/10)×25/100-1/4=

=5×5+4×58 tot asta supra /40 ×25/100 -1/4=

=25+232 totul supra /40 ×25/100-1/4=

=257/40 ×25/100 -1/4=

=257×5 totul supra /8×100-1/4=

=1285/800 -1/4=

=1285-200 totul supra /800=

=1085/800 (simplificat cu 5)=

=217/160=

=1,35625 (asta numai in caz ca trebuie sa fie fractie zecimală, Daca Nu e rezultatul de mai sus =217/160)


d)

(5/9-0,2)×6+ (0,5+1/2)×3/4=

=(5/9-2/10)×6/1 +(5/10+1/2)×3/4=

=10×5-9×2 tot ăsta supra/90 ×6/1 + 5+5 totul supra/10 ×3/4=

=50-18 totul supra /90 ×6/1 +10/10 ×3/4=

=32/90 ×6/1 + 5×3 totul supra/10×2 =

=32×2 totul supra/30×1 + 15/20=

=64/30 + 15/20=

=2×64+3×15 tot asta supra/60=

=128+45 totul supra/60=

=173/60=

=2,88(3) (daca ar fi necesar numai)


2)
[64,25+(64,25+16,5)+(64,25+64,25+16,5)×2]×1,35=

=[64,25+80,75+(64,25+80,75)×2]×1,35=

=(145+145×2)×1,35=

=(145+290)×1,35=

=435×1,35=

=587,25 lei a încasat producatorul