Question

1 . transforma in doua moduri inmultirile de mai jos in adunari repetate :
a) 3x2=2x3=   
    3x5=                
    5x4=               


b) 3x6=
    5x2= 
    6x4= 



2. Scrie pe 15 ca termen al adunarii luat de: 4 ori ;3ori.

Answer 1

3x2=2x3=3+3=2+2+2=6
3x5=5x3=5+5+5=3+3+3+3+3=15
5x4=4x5=5+5+5+5=4+4+4+4+4=20

3x6=6x3=3+3+3+3+3+3=6+6+6=18
5x2=2x5=5+5=2+2+2+2+2=10
6x4=4x6=6+6+6+6=4+4+4+4+4+4=24

15x4=15+15+15+15=60
15x3=15+15+15=45