Question

3 Efectuează, respectând ordinea de rezolvare indicata:
a)
c)
2 x 1902 + 01204 - 2011-10
5
D
[(45 + 5) x 8 - 20 x 5] : 100
1 2 3 5
200
[(25 + 25 x 25): 50] : 13
5 (2) 1
3 4
b)
d)
2007 + 18 : 12 + (16
27.





Repede ​

Answer 1

Răspuns:

[(45 + 5) x 8 - 20 x 5] : 100=

(50x8-100):100=

(400-100):100=

300:100=3

200-[(25 + 25 x 25): 50] : 13=

200-[(25+625):50]:13=

200-(650:50):13=

200-13:13=

200-1=199

2x[90:2+(120:4-20)]x10=

2x[90:3+(30-20)]x10=

2x(90:3+10)x10=

2x(30+10)x10=

2x40x10=

80x10=800

2007+18:[2+(16-108:27):3]=

2007+18:[2+(16-4):3]=

2007+18:(2+12:3)=

2007+18:(2+4)=

2007+18:6=

2007+3=2010