Răspuns:
Explicație pas cu pas:
a)
1/2*12=12/2=6
-
3/5*60=180/5=36
5/2*66=330/2=165
5/7*21=105/7 =15
b)
10/100*100= 10
25/100*20=25/5= 5
6/100*150=18/2=9
2/3*300= 200
10/100*200=20
(*) =înmultire
