Răspuns :
4.
B.
39+81:9-9
39+9-9
48-9
48
(92-22):10-2
70:10-2
7-2
5
C.
17+64:8x4+151
17+8x4+151
17+32+151
200
190-(75+15):5-7
190-90:5-7
190-18-7
165
5
a.36:4=9(C)
b.18:6=3(orhidee)
18+3=21(plante total)
c.
3(6+4+5)
3x15
45
45:3=15(clopotei fiecare frate)
B.
39+81:9-9
39+9-9
48-9
48
(92-22):10-2
70:10-2
7-2
5
C.
17+64:8x4+151
17+8x4+151
17+32+151
200
190-(75+15):5-7
190-90:5-7
190-18-7
165
5
a.36:4=9(C)
b.18:6=3(orhidee)
18+3=21(plante total)
c.
3(6+4+5)
3x15
45
45:3=15(clopotei fiecare frate)