Rapid am test
Efectuati folosind factorul comun:
a)101*102-92*101
b)340*76-340*19+340*5-340*61


Răspuns :

Răspuns:

a) 101*102-92*101=

=10302-9292=

=1010

b) =25840-6460+1700-20740=

=19380+1700-20740=

=21080-20740=

=340