Răspuns :
Răspuns:
[tex]5*4=4+4+4+4+4=20\\\\7*10=10+10+10+10+10+10+10=70\\\\9*2=9+9=18\\\\4*3=4+4+4=12\\\\6*7=6+6+6+6+6+6+6=42\\\\8*5=8+8+8+8+8=40[/tex]
Răspuns:
5 × 4 = 5 + 5 + 5 + 5
7 × 10 = 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7
9 × 2 = 9 + 9
4 × 3 = 4 + 4 + 4
6 × 7 = 6 + 6 + 6 + 6 + 6 + 6 + 6
8 × 5 = 8 + 8 + 8 + 8 + 8