1)31•2=31+31=62
2)42•2=42+42=84
3)13•3=13+13+13=39
4)25л•3=25л+25л+25л=75л
5)2тг•8=2тг+2тг+2тг+2тг+2тг+2тг+2тг+2тг=16тг
6)30тг•3=30тг+30тг+30тг=90тг
1)31•2=31+31=62
2)42•2=42+42=84
3)13•3=13+13+13=39
4)25л•3=25л+25л+25л=75л
5)2тг•8=2тг+2тг+2тг+2тг+2тг+2тг+2тг+2тг=16тг
6)30тг•3=30тг+30тг+30тг=90тг