Răspuns :
18:9=2
18-9-9
b)16:4=4
16-4-4-4-4
c)9:3=3
9-3-3-3
d)20:10=2
20-10-10
e)12:6=2
12-6-6
f)nu ai spus cât,dar faci tot așa
18-2-2-2-2-2-2-2-2-2 (2 de 9 ori)
16-4-4-4-4 (4 de 4 ori)
9-3-3-3 (3 de 3 ori)
20-2-2-2-2-2-2-2-2-2-2 (2 de 10 ori)
12-2-2-2-2-2-2 (2 de 6 ori)
32-4-4-4-4-4-4-4-4 (4 de 8 ori)