- 5+5+5=15
6×6-6=36
33-3=30
( 22+2) +(2×2)=28
99+(9:9)=100
5-(5:5)=4
(55:5)+5=16
99+(9:9)=100
5-(5:5)=4
(55:5)+5=16
99+(9:9)=100
5×5+5+5:5=31
2x2x2x2:2=15
(6×6):6=6
(77:7)+7=18
(888:8)+8=11
(44:4)-(4:4)=10
2. X-I=IX
IV+II=VI
VIII+II=X
VII=VI+I
X-IV=VI
VIII-III=V
XII=VII+V
VI+IV=X
3. 2ձկն.-2ր-3ձուկ
4 ձկն.-2 ր-3×2=6
4 ձկն.- 2 ր-6 ձուկ
4 ր-6×2=12ձ
4. 2 ժ.-5 հոգի
1հ-10 ժ
5 հ-10:5=2 ժ
5. 8+5+5=18տ.
6. 21-4=17
17-5=12