$13\cdot\left(-5+3\right)=$ 

 $55\cdot16-55\cdot6=$  

 $10\cdot\left(-3+4\right)=$  

 $-3-2-1+1+2+3=$  

 $\left(-10\right)\cdot\left(-9\right)\cdot\left(-8\right)\cdot...\cdot8\cdot9\cdot10=$  

 $25\cdot20=$  

 $25\cdot24=$  

 $-6+8-6+8+4-8=$  

 $13\cdot5+13\cdot15=$  

 $64\cdot2=$