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Dau 15 puncte+coroana
Efectueaza grupand convenabil termenii:
a) 296+ 25+ 4+ 75
b) 50+ 75+ 100+ 125+ 150
c) 3500+ 892+ 4500+ 108


Răspuns :

a)
(296+4)+(25+75)=400

b)
(50+150)+(75+125)+100=500

c)
(3500+4500)+(892+108)=9000

296+25+4+75=400

50+75+100+125+150=600

3500+892+4500+108=8.900