3)
88=cel mai mic nr.par mai mic decat 90
87=predecesorul numarului 88
2=cel mai mic nr.par mai mare decat 1
3=succesorul nr.2
87:3=29⇒raspuns corect a) 29
5)
362+(4xy+35:7)+13x24=35x10x2+30:2
362+(4xy+5)+312=700+15
4xy+5+674=715
4xy+679=715
4xy=715-679
4xy=36
y=36:4
y=9⇒raspuns corect d) 9
6) 3+5+14=22 jumatati
22:2=11 oua⇒raspuns corect c) 11 oua
7) 534-134=400 l
266+134=400 l
Raspuns corect b) 266 l;534 l.