DAU CORONITA!
Afla numerele necunoscute,folosind proba scaderii si adunarii.
a) 246+n=682;
n+257=584.

b) n-358=129;
n-409=376

c)951-n=708
765-n=526






















Răspuns :

a) 246+436=682
584-257=327 (327+257=584)

b) 358+129=487 (487-358=129)
409+376=785 (785-409=376)

c)951-708=243 (951-243=708)
765-526=239 (765-239=526)