Question

2.5. Factor comun
1. Efectuează calculele folosind factorul comun:
a) 97.13-97.3=
b) 328.35 - 32825 =
c) 56.35 +65.56 =
d) 109.15-14.109 =
e) 1991 1990 - 1991. 1989= f) 1994-1991 +9.1994 =​

Answer 1

Răspuns:

a). =97(13-3)=97x10=970

b). =328(35-25)=328x10=3280

c). = 56(35+56)=56x91=5096

d). = 109(15-14)=109x1=109

e). =1991(1990-1989)=1991x1=1991

f). =1994x(1991+4)=1994x1995=3978030