Ex 1
a) 18/10=9/5
b) 75/100=3/4
c) (26-2)/9=24/9=8/3
d) 3,8(3)=(383-38)/90 =345/90=69/18=23/6
Ex 2
5/8=0,625
29/9=3,(2)
28/15=1,8(6)
Ex 3.
35,29+8,764=le pui una sub alta asa
35,290+
8,764
-----------
44,054
26,610-7,245=19,365
2,34×5,7=13,338
52,63:100=0,5263
3,72:0,6=37,2:6=6,2
Ex 4
Media aritmetica
(47+59+70)/3=176/3=58,(6)
Ex 5
(n+95)/2=87,5
n+95=87,5×2
2+95=175
n=175-95
n=80
Daca copiezi tot corect, vei lua 10.
Succes!
