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grupează convenabil termenii si calculeaza a) 1245 +690+3755+310= b) 24175+31906+25825+18094=

Răspuns :

(1245+3755)+(690+310)
(21906+18094)+(24175+25825)
a)1245+3755=5000 / 310+690=1000 / 5000+1000=6000 b)31906+18094=50000 / 24175+25825=50000 /50000+50000=100000