Question

Ayuda plos gracias es para un trabajo

Answer 1

3X23= 3X(20+3)=60+9=69
1X53= 1X(50+3)=50+3=53
2X22= 2X(20+2)=40+4=44
2X33= 2X(30+3)=60+6=66
3X19= 3X(10+9)=30+27=57
2X23= 2X(20+3)=40+6=46
2X32= 2X(30+2)=60+4=64
1X53= 1X(50+3)=50+3=53