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Ex:2,3,4,5,6,7 va roggggggggggggggggg



Ex234567 Va Roggggggggggggggggg class=

Răspuns :

ex 2)123×2=246, 223×4=892, 207×6=1242
          246+892+1242=1470+892=2362. suma este 2362
ex 3) 349 x 8 = 2792 ( deimpartitul)
          Proba : 2792 : 8 = 349.
ex 4) 1-falsa, 2-adevaraata, 3-falsa, 4- adevarata