Question

Efectuati cat mai rapid va rog frumos dau coronita

Answer 1

a)
13+7-11-20-39 = 20 - 11-20-39 = 9-20-39 = -11-39 = -50

b)
323-137-23-63+1000 = 186-23-63+1000=163-63+1000=100+1000=1100

c)
-1+2-3+4-5+6-7+8 = 1-3+4-5+6-7+8 = 4

d)
1-2+99+102= -1+99+102=98+102=200

e)
-1+97+103-189=96+103-189=199-189 =10

f)
-299-1+0+304-4 = -300 +300 = 0

g)
5+1995 -1995 - 5 = 5-5 + 1995 -1995 = 0 (am grupat termeni)

h)
-15-5-9+9 = -20 + 0 =-20