3. a)
12 * 4 = 48
8 * 4 + 2 = 34
10 * 4 + 1 = 41
b) 38 : 4 = 9 (rest 2) deci 10 compartimente
42 : 4 = 10 (rest 2) deci 11 compartimente
90 : 4 = 22 (rest 2) deci 23 compartimente
6. a) rest 3
b) rest 2
c) rest 1
d) rest 4
e) rest 0
f) rest 0
g) rest 0
h) rest 0
