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Dau coroana!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Ex 7 repede


Dau CoroanaEx 7 Repede class=

Răspuns :

a) 1x1=1
2x2=4
3x3=9
4x4=16
5x5=25
6x6=36
7x7=49
8x8=64
9x9=81

b)152,251,350
c)999-100=899
d) (275-175):(2x5)=100:10=10
e)(70:2)+(80:4)+(15x2)=35+20+30=85