Răspuns:
Ex 2
a. 826-517=299
654-239=415
837-528=309
453-235=219
B.639-276=363
514-215=299
725-572=153
307-216=91
C.328-179=159
836-565=271
743-474=269
812-421=391
D.300-129=171
801-536=275
900-784=116
1000-594=406
Exercitiul 3.
a. 562-382=280
b. 307-208=109
c.721-543=188
d.700-564=136
Exercitiul 4.
725,652,426,705
725-384=341
652-384=278
426-384=42
705-384=321
.
Exercitiul 5.
546,439,652,575.
813-546=377
813-439=394
813-652=171
813-575=258.
